JP3454046B2 - Engine control device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an engine control device, and more particularly, it can improve the fuel consumption reducing effect in an engine control system of an engine stop type, and abnormal heat generation and noise of the engine when the vehicle is stopped for a long time. The present invention relates to an engine control device that can prevent problems such as the above.

[0002]

2. Description of the Related Art Some engines mounted on vehicles are provided with an engine control device in order to reduce fuel consumption. In order to reduce the fuel consumption of the engine when the eco-run condition is satisfied, the engine control device
There are things that control to run in eco-run mode.

As the engine control device, there is an engine stop system that controls the engine so that the engine is stopped to perform the eco-run operation when the eco-run condition is satisfied. In addition, there is an engine control device of an idle operation system in which the engine is put into an idle operation and controlled to perform an eco-run operation when the eco-run condition is satisfied.

An example of such an engine control device is disclosed in Japanese Patent Laid-Open No. 7-266932.
The control device disclosed in this publication controls the engine to automatically stop when the automatic stop condition of a predetermined deceleration state in which the required torque is small with respect to running resistance is satisfied while the engine is operating, and the automatic stop is performed. When the clutch disengagement condition is satisfied, the starting clutch is controlled to be disengaged, and when the engine is automatically stopped and the starting clutch is disengaged, the required torque becomes large with respect to the running resistance. When the start condition is satisfied, the engine is automatically started, and when the clutch connection condition is satisfied during this automatic start, the control means is controlled so that the starting clutch is connected. To improve the fuel consumption reduction effect by automatically stopping the engine and disengaging the starting clutch when decelerating when only torque is required Those were.

[0005]

By the way, as an engine control device, there is an engine stop system that stops the engine when the eco-run condition is satisfied as described above. This engine control device controls the engine mounted in the vehicle to stop the engine when the eco-run condition is satisfied during normal operation so as to perform the eco-run operation, and the eco-run operation condition is not satisfied during the eco-run operation. In some cases, the engine is started to control the normal operation.

[0006] During the eco-run operation, for example, the following control is performed according to the operation state. 1. When the throttle valve is fully closed (at high vehicle speed), the clutch is set to normal and the fuel is stopped. 2. When the throttle valve is fully closed (at low vehicle speed), the clutch is released and the vehicle is stopped. 3. When the throttle valve is low, the eco-run operation is started when the generated torque is 0 kgm according to the throttle opening. 4. At the time of decelerating operation, the driver's willingness to decelerate is determined from the throttle opening and the deceleration of the vehicle with respect to the vehicle speed, and the eco-run operation is performed. 5. At a constant speed, the driver's willingness to travel at a constant speed is determined from the throttle opening and the deceleration of the vehicle with respect to the vehicle speed, and the eco-run operation is performed. In addition, the above 2. ~ 5. At, the clutch is released, the fuel supply is stopped, and the engine is stopped.

Further, the engine control device sets an eco-run prohibition condition in addition to the above-mentioned eco-run condition. When the eco-run prohibition condition is satisfied, the eco-run operation is prohibited and normal operation is performed. If is not established, there is a control to allow the eco-run operation.

As shown in FIG. 8, when the eco-run prohibition control is started (step 400), it is judged whether or not the eco-run prohibition condition is satisfied (step 40).
2). If the eco-run prohibition condition is met (step 40)
2: YES) determines whether the engine is stopped (step 404).

In this determination (step 404), if the engine is stopped by the eco-run operation (step 404: YES), the engine is started (step 406), the normal operation is controlled, and the operation is ended (step 408). ). If the engine is not stopped in this determination (step 404) (step 40)
4: NO) controls the normal operation (step 41).
0) and ends (step 408).

On the other hand, in the judgment (step 402), when the eco-run prohibition condition is not satisfied (step 40)
2: NO) controls the eco-run operation when the eco-run condition is satisfied by permitting the eco-run operation (step 412), and ends (step 408).

The eco-run prohibition conditions are as follows. The vehicle is failing (ignition fail, water temperature sensor fail, throttle opening sensor fail, selector switch fail, etc.) 2. Large electric load (turn signal lamp ON, headlight ON, air conditioner ON, etc.) 3. Bad battery 4. Eco-run switch is off 5. Selector lever is other than drive range 6. Power mode switch is ON 7. The parking brake is on. When any one of these is satisfied, the eco-run prohibition condition is satisfied.

As a result, when the eco-run prohibition condition is satisfied, regardless of whether the vehicle is running or stopped, prohibition of operation of the engine other than operation of the ignition key, that is, stop of the engine due to satisfaction of the eco-run condition, is controlled so that normal operation is performed. . Further, when the eco-run prohibition condition is satisfied while the engine is stopped due to the eco-run condition being satisfied, the engine is started to escape from the eco-run operation and control is performed so as to become the normal operation regardless of whether the vehicle is running or stopped.

However, in the engine control device, when the driver leaves the vehicle when the vehicle is stopped and the eco-run prohibition condition is satisfied, the engine stop is prohibited and the engine is normally operated in the idling state. Therefore, there is a disadvantage that the engine wastefully consumes fuel in the empty state and the fuel consumption reduction effect is reduced.

When the eco-run prohibition condition is met,
When the driver leaves the vehicle and stops the vehicle for a long time, the normal operation in the idling state lasts for a long time, which causes inconveniences such as abnormal heat generation and noise generation of the engine.

Further, the engine control device starts the engine when the eco-run prohibition condition is satisfied when the vehicle is stopped with the engine stopped due to the satisfaction of the eco-run condition and the driver is leaving the vehicle. Since the normal operation is performed in the idling state, there is a disadvantage that the engine wastefully consumes the fuel in the empty state as described above and the fuel consumption reducing effect is reduced.

[0016]

Therefore, in order to eliminate the above-mentioned inconvenience, the present invention is provided with a clutch whose torque capacity can be adjusted, and an eco-run condition is established during normal operation of an engine mounted on a vehicle. If the eco-run condition is not satisfied during this eco-run operation or if the eco-run prohibition condition is satisfied during this eco-run operation, start the engine and start the normal operation. In the engine control device for controlling so as to provide a control means for prohibiting the transition to the normal operation due to the engine start when the eco-run condition of the vehicle is satisfied or the eco-run condition is not satisfied or the eco-run prohibition condition is satisfied. It is characterized by that.

Further, the control means of the engine control device is characterized in that the empty vehicle condition is satisfied when the door of the vehicle is closed and the driver's seat of the vehicle is empty.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION The engine control device of the present invention comprises:
Equipped with a clutch that can adjust the torque capacity, if the eco-run condition is satisfied during normal operation of the engine mounted on the vehicle, stop the engine and release the clutch to control the eco-run operation. When the eco-run condition is not satisfied, or when the eco-run prohibition condition is satisfied, the engine is started to control the normal operation.

In the engine control device of the present invention, when the empty vehicle condition is satisfied, the control means controls so as to prohibit the transition to the normal operation due to the engine start due to the failure of the eco-run condition or the satisfaction of the eco-run prohibition condition. As a result, it is possible to prevent the engine from being normally operated in the idling state in the empty state.

For example, the engine control device of the present invention is
The control unit determines that the empty condition is satisfied when the vehicle door is closed and the driver's seat of the vehicle is empty, so that the engine is idling when the driver leaves the vehicle and becomes empty. It can prevent the normal operation.

[0021]

Embodiments of the present invention will be described below with reference to the drawings. 1 to 7 show an embodiment of the present invention. In FIG. 6, 2 is a vehicle and 4 is an engine.
The engine 4 includes an air cleaner 6 as shown in FIG.
Are connected by an intake pipe 8 and an intake passage 10 is provided.
A throttle valve 12 and a fuel injection valve 14 are provided in the intake passage 10. Further, the engine 4 is provided with a starter 16.

As shown in FIG. 6, the engine 4 is connected with a clutch 20 which is controllable in a connected / disengaged state so as to intermittently drive the crankshaft 18. This clutch 20
Is, for example, an electromagnetic clutch or the like that can adjust the torque capacity electromagnetically, and is connected to the crankshaft 18. The drive-side clutch plate 22, the driven-side clutch plate 24 on the side of a forward / reverse switching mechanism 30 described later, and the clutch solenoid. 26 and.

A forward / reverse switching mechanism 30 is connected to the clutch 20 by a clutch shaft 28. The forward / reverse switching mechanism 30 includes a forward gear train 32, a reverse gear train 34, and a switching unit 36. The switching unit 36 is switched by a selector lever 38 of a continuously variable transmission 40 described later to selectively mesh the forward gear train 32 and the reverse gear train 34.

To the forward / reverse switching mechanism 30, for example, a continuously variable transmission (CVT) 40 which constitutes a transmission section of the transmission is connected. The continuously variable transmission 40 has a drive pulley 42, a driven pulley 44, and a belt 46.

The drive pulley 42 is provided with a drive shaft 48 whose one end side is connected to the switching portion 36 of the forward / reverse switching mechanism 30, and a drive side fixed pulley portion piece 50 is fixed to the drive shaft 48. The drive side movable pulley part 52 is attached to the drive shaft 48.
Is provided so as to be axially movable and non-rotatable. The drive-side housing 5 is provided on the rear side of the drive-side movable pulley piece 52.
4 forms a drive side hydraulic chamber 56.

The driven pulley 44 is provided with a driven shaft 58 arranged in parallel with the drive shaft 48, and a driven side fixed pulley portion piece 60 is fixed to the driven shaft 58.
8, a driven-side movable pulley portion 62 is provided so as to be axially movable and non-rotatable. On the back side of the driven-side movable pulley portion 62, the driven-side hydraulic chamber 6 is provided by the driven-side housing 64.
6 is formed, and a driven-side spring 68 that presses the driven-side movable pulley piece 62 toward the belt 46 is built in.

The continuously variable transmission 40 has a drive side hydraulic chamber 56.
The hydraulic pressures of the primary pressure and the line pressure are supplied to the driven hydraulic chamber 66 and the gear ratio adjusting device 70 including a hydraulic control circuit, respectively, and the drive pulley 42 and the driven pulley 44 are driven.
The groove width is relatively increased / decreased to increase / decrease the radius of gyration of the belt 46 to continuously change the gear ratio. Further, the driven shaft 58 of the continuously variable transmission 40 has a final reduction mechanism 72 and a differential mechanism 74.
Is connected to the drive wheel 76 via.

As shown in FIG. 7, the engine 4 is provided with an engine stop device 78 for stopping the driving of the fuel injection valve 14 constituting the fuel supply device so as to stop the engine 4. Further, the engine 4 is provided with an engine starting device 80 for driving a starter 16 which constitutes a starting device for starting the engine 4.

Clutch solenoid 2 of the clutch 20
6, the gear ratio adjusting device 70 of the continuously variable transmission 40, the engine stopping device 78, and the engine starting device 80 are connected to the control means 84 of the engine control device 82. In this embodiment, the control means 84 of the engine control device 82 is
It is constituted by the control means of the continuously variable transmission 40.

The control means 84 includes a DDT switch 86 for detecting the driver's willingness to travel, a throttle opening sensor 88 for detecting the throttle opening θ of the throttle valve 12,
An engine rotation speed sensor 90 that detects an engine rotation speed NE, a transmission portion input rotation speed sensor 92 that detects a transmission portion input rotation speed NI input to a drive shaft 48 of a continuously variable transmission 40 that is a transmission portion, and a continuously variable transmission. A vehicle speed sensor 94 for detecting the rotational speed of the driven shaft 58 of the transmission 40 as a vehicle speed NV;
An accelerator sensor 96 that detects the accelerator operation amount AC of the accelerator pedal of the vehicle 2, a selector position sensor 98 that detects the selector position of the selector lever 38 of the continuously variable transmission 40, and an air conditioner switch 100 are connected.

The control means 84 causes the clutch solenoid 26 to engage / disengage the clutch 20 in response to various signals input from the switches and the sensors 86 to 100, and the gear ratio adjusting device 70 changes the gear ratio of the continuously variable transmission 40. The fuel injection valve 14 is adjusted by the engine stop device 78.
The engine 4 is stopped by stopping the driving of the engine and stopping the fuel supply.
6 is driven to start the engine 4.

The control means 84 controls the eco-run operation in which the engine 4 is stopped and the clutch 20 is released when the eco-run condition is satisfied, and
If the eco-run condition is not satisfied during the eco-run operation, the engine 4 is started to control the normal operation. The eco-run condition is set depending on the operation state of the throttle valve 12, the vehicle speed, and the like.

That is, the control means 84 stops the engine 4 by the engine stopping device 78 and releases the clutch 20 by the clutch solenoid 26 when the eco-run condition for stopping the engine 4 during the normal operation is satisfied. When the eco-run condition is not satisfied during this eco-run operation, the engine starter 80 drives the starter 16 to drive the engine 4
To control the normal operation.

Further, the control means 84 controls the eco-run operation so as to be in the normal operation when the eco-run prohibition condition is satisfied, and permits the eco-run operation when the eco-run prohibition condition is not satisfied.

This eco-run prohibition control is performed as shown in FIG. In FIG. 8, when control is started (step 400), it is determined whether or not the eco-run prohibition condition is satisfied (step 402). If the eco-run prohibition condition is satisfied (step 402: YES), the engine is stopped. It is determined whether or not (step 404).

In this judgment (step 404), if the engine is stopped by the eco-run operation (step 404: YES), the engine 4 is started (step 406), the normal operation is controlled, and the process is terminated (step 404). 408). If the engine is not stopped in the determination (step 404) (step 40)
4: NO) controls the normal operation (step 41).
0) and ends (step 408).

On the other hand, when the eco-run prohibition condition is not satisfied in the judgment (step 402) (step 40)
2: NO) controls the eco-run operation when the eco-run condition is satisfied by permitting the eco-run operation (step 412), and ends (step 408). The eco-run prohibition condition is the same as that described with reference to FIG.

As described above, the engine control device 82 includes the clutch 20 whose torque capacity can be adjusted,
When the eco-run condition is satisfied during the normal operation, the engine 4 is stopped and the clutch 20 is released to control the eco-run operation, and when the eco-run condition is not satisfied or the eco-run prohibition condition is satisfied during the eco-run operation. In this case, the engine 4 is started to control the normal operation.

As shown in FIG. 7, the engine control unit 82 uses the control means 84 to determine the driver's seat state, the door state, and the vehicle speed in order to determine whether or not the vehicle 2 is in an empty state.
You are entering an element. As the driver's seat state, a driver's seat switch 102 is provided which detects whether the driver is seated or not by the pressure on the driver's seat surface. As for the door state,
A door switch 104 for detecting the open / closed state of the door is provided. The vehicle speed sensor 94 is provided for the vehicle speed.

These vehicle speed sensor 94 and driver's seat switch 1
02 and the door switch 104 are connected to the control means 84. The control means 84 determines whether the empty vehicle condition of the vehicle is satisfied based on the vehicle speed, the driver's seat state, and the door state. If the empty vehicle condition is satisfied, the eco-run condition is not satisfied or the eco-run prohibition condition is satisfied. Control is performed so that the transition to normal operation due to start is prohibited.

In this case, the control means 84 determines that the empty vehicle condition is satisfied when the door of the vehicle 2 is closed and the driver's seat of the vehicle 2 is empty. Further, the control means 84
Determines that the vacant condition is not satisfied when the door of the vehicle 2 is closed and the driver's seat of the vehicle 2 is seated.

Further, the control means 84 prohibits the stop of the engine 4 by stopping the determination of the empty condition of the vehicle 2 when the engine stop prohibition condition that the engine 4 is in a difficult state to start is satisfied. As a state where the engine 4 is difficult to start,
It is determined that the vehicle is failing, the electric load is large, the battery is defective, or the like.

Next, the operation will be described.

When the control means 84 starts the control as shown in FIG. 1 (step 200), the engine control device 82 determines whether or not the engine 4 is stopped by the eco-run operation (step 202). ).

In this determination (step 202), if the engine 4 is not stopped (driving) and NO is determined, it is determined whether the vehicle 2 is stopped (204). In this determination (step 204), if the vehicle 2 is stopped and YES, it is determined whether the engine stop prohibition condition is satisfied (206).

The determination of the engine stop prohibition condition (step 206) is performed as shown in FIG. In FIG. 2, when the determination is started (step 300), it is determined whether or not the vehicle 2 has failed (step 302). The judgment of the failure of the vehicle 2 is made by, for example, whether or not an ignition failure, a water temperature sensor failure, a throttle opening sensor failure, a selector switch failure, or the like has occurred.

When the judgment (step 302) is NO, it is judged whether or not the electric load is large (step 3).
04). The judgment of the large electric load is made by, for example, whether or not the turn signal lamp, the headlight, the air conditioner, etc. are ON.

If the determination (step 304) is NO, it is determined whether or not the battery (not shown) mounted on the vehicle 2 is defective (step 306). The determination of the battery defect is made based on, for example, the battery voltage.

If the judgment (step 306) is NO, it is determined that the engine stop prohibition condition is not satisfied (step 308), and the process ends (step 310).

On the other hand, the judgment (step 302) is YES.
In the case of S, if the determination (step 304) is YES, and if the determination (step 306) is YES, it is determined that the engine stop prohibition condition is satisfied (step 312), and the process ends (step 310).

When the processing shown in FIG. 2 is completed (step 3
10) and returns to the process shown in FIG.

In the judgment (step 206), if the engine stop prohibition condition is not satisfied and the answer is NO, it is judged whether the door is open or closed (step 20).
8).

In this determination (step 208), if the door is closed, it is determined whether the driver's seat is empty or seated (step 210).

In this determination (step 210), if the driver's seat is empty, the engine 4 in operation is stopped (212) and the processing ends (214).

On the other hand, if the door is open in the judgment (step 208), the conventional control shown in FIG. 8 is performed (step 216), and the process ends (step 21).
4). If the driver's seat is seated in the determination (step 210), the conventional control shown in FIG. 8 is performed (step 216), and the process ends (step 214).

If YES in the judgment (step 206) since the engine stop prohibition condition is satisfied, the stop of the engine 4 during operation is prohibited (step 218).
The process ends (step 214).

Furthermore, if the vehicle 2 is not stopped (running) and NO in the above judgment (step 204), the conventional control shown in FIG. 8 is performed (step 220), and the process ends (step 214).

Furthermore, the judgment (step 202)
When the engine 4 is stopped due to the eco-run operation or the empty vehicle condition being satisfied, it is determined whether the door is open or closed (step 222).

If the door is closed in this determination (step 222), it is determined whether the driver's seat is empty or seated (step 224).

If the driver's seat is in the seated state in this determination (step 224), the conventional control shown in FIG. 8 is performed (step 226), and the process ends (step 214).

On the other hand, if the door is in the open state in the above determination (step 222), the restart of the stopped engine 4 is prohibited (step 228) to bring the engine into the stopped state, and the process is ended (step 214). In addition, the determination (step 22)
In 4), when the driver's seat is empty, the restart of the stopped engine 4 is prohibited (step 228) to bring the engine into a stopped state, and the process ends (step 214).

As a result, the engine control device 82 can control the engine 4 in accordance with the judgment based on the empty vehicle condition, as shown in FIGS.

In other words, the engine control device 82 indicates that the vehicle 2 is stopped, the engine 4 is not stopped, the driver sits in the driver's seat and the door is closed (A), and the driver tries to get off the vehicle. When the door is opened (B), the driver dismounts and the driver's seat is vacant (C), and the door is closed to become an empty state, the engine 4 is stopped due to the establishment of the empty condition (D).

In the state (D) in which the driver's seat is vacant and the door is closed, the restart of the engine 4 stopped due to the establishment of the empty vehicle condition is prohibited and the stopped state is maintained. In this state (D), the driver opens the door to try to get in (E), and even if the driver gets in and sits in the driver's seat (F), it stops because the empty vehicle condition is satisfied until the door is closed. The restart of the engine 4 is prohibited and the stopped state is maintained.

When the driver is seated in the driver's seat (F) and the door is closed (G), the engine 4 stopped due to the unsatisfied empty condition is restarted, and the vehicle can run.

When the vehicle is stopped and the empty vehicle condition is satisfied while the engine 4 is stopped by the eco-run operation,
The restart of the engine 4 is prohibited and the stopped state is maintained.

As a result, the engine control device 82 stops when the driver is away from the vehicle 2 and becomes empty, and the engine 4 is stopped when the driver is running, and when the engine 4 is stopped by the eco-run operation. In that case, restart is prohibited and the operation is stopped.

As described above, the engine control device 82 controls so that when the empty condition of the vehicle 2 is satisfied, the transition to the normal operation due to the start of the engine 4 due to the failure of the eco-run condition or the satisfaction of the eco-run prohibition condition is prohibited. As a result, it is possible to prevent the engine 4 from being normally operated in the idling state in the empty state.

Further, the engine controller 82 determines that the empty condition is not satisfied when the door of the vehicle 2 is closed and the driver's seat of the vehicle 2 is seated, so that the driver gets into the vehicle 2. When the vehicle is in a riding state, the engine 2 can be started to enable traveling.

Further, the engine control device 82 prohibits the stop of the engine 2 by stopping the determination of the empty condition of the vehicle 2 when the engine stop prohibition condition that the engine 4 is in a difficult state to start is satisfied. It is possible to prevent the restart of the engine 4 from becoming difficult due to the stop.

Therefore, the engine control means 84 is
The effect of reducing fuel consumption in the engine control system 82 of the engine stop system can be improved, and problems such as abnormal heat generation and noise generation of the engine 4 when the vehicle 2 is stopped for a long time can be prevented. It is possible to prevent the restart from becoming difficult.

Further, the engine control device 82 is operated with respect to the current control device without deteriorating the drivability when the control is performed while the vehicle 2 is stopped and therefore the engine control device 82 is implemented in the current control device. It can be realized by only two signal inputs of the seat switch 102 and the door switch 104 and the change of the program, the cost increase is extremely small, and all the shifts provided with the clutch which can be electronically controlled to be in the connected / released state. Can be applied to the machine.

The engine control unit 82 of the above-described embodiment is used.
Although the driver's seat switch 102 is provided for determining the empty vehicle condition, the seatbelt switch may be a seatbelt switch that detects a seat belt attachment / detachment state. When the seat belt is not worn, the seat belt switch determines that the vehicle is in an empty state, stops the engine 4, and prohibits the restart.

Therefore, the seatbelt switch can be used in place of the driver's seat switch 102 to determine the vacant state. In this case, the engine 4 cannot be started without wearing the seatbelt, so the seatbelt It is possible to promote wearing of the vehicle and contribute to safe driving.

[0075]

As described above, the engine control device of the present invention can prevent the engine from normally operating in the idling state when the vehicle is empty.

For example, the engine control device of the present invention is
By determining that the empty condition is satisfied when the vehicle door is closed and the driver's seat of the vehicle is empty, the engine is normally operated in the idling state when the driver leaves the vehicle and becomes empty. Can be prevented.

Therefore, this engine control device can improve the fuel consumption reduction effect in the engine control system of the engine stop system, and prevent problems such as abnormal heat generation and noise generation of the engine when the vehicle is stopped for a long time. You can
Further, this engine control device does not cause deterioration of drivability when implemented in a current control device,
It can be realized with a slight signal input and program change to the existing control device, the cost is extremely low, and it can be applied to all transmissions with a clutch that can be electronically engaged / disengaged. it can.

[Brief description of drawings]

FIG. 1 is a flow chart of control of an engine control device showing an embodiment of the present invention.

FIG. 2 is a flowchart of an engine stop prohibition condition.

FIG. 3 is a timing chart of control of the engine control device.

FIG. 4 is a diagram showing a relationship between determination of empty vehicle conditions and control when the engine is not stopped.

FIG. 5 is a diagram showing a relationship between determination of empty vehicle conditions and control when the engine is stopped.

FIG. 6 is a schematic configuration diagram of a vehicle equipped with an engine control device.

FIG. 7 is a system configuration diagram of an engine control device.

FIG. 8 is a flowchart of control of an eco-run prohibition condition by an engine control device showing a conventional example.

[Explanation of symbols] 2 vehicles 4 engine 12 Throttle valve 14 Fuel injection valve 16 Starter 20 clutch 40 continuously variable transmission 78 Engine stop device 80 engine starter 82 Engine control device 84 control means 94 vehicle speed sensor 102 driver's seat switch 104 door switch

Continuation of the front page (56) Reference JP 58-30439 (JP, A) JP 64-83421 (JP, A) JP 8-268120 (JP, A) JP 58-18537 (JP , A) JP-A 1-155037 (JP, A) JP-A 9-42005 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) F02D 29/00

Claims (2)

(57) [Claims] 1. A clutch having an adjustable torque capacity is provided.
If the eco-run condition is satisfied during normal operation of the engine mounted on the vehicle, stop the engine and disengage the clutch.
Even if the above eco-run conditions are not met during this eco-run operation, control is performed to release the eco-run operation.
Or , in the engine control device that controls the engine to start to the normal operation when the eco-run prohibition condition is satisfied, when the empty condition of the vehicle is satisfied, the eco-run condition is not satisfied or the eco-run prohibition condition is satisfied. An engine control device comprising a control means for controlling so as to prohibit transition to normal operation due to engine start . 2. The control means is control means for determining that the empty vehicle condition is satisfied when a door of the vehicle is closed and a driver's seat of the vehicle is empty. The engine control device according to.