TWI487639B - Engine idling device - Google Patents

Description

Engine idle extinguishing device

The invention relates to an engine idle speed extinguishing device, in particular to an engine idle speed extinguishing device suitable for a locomotive engine.

The exhaust gas emitted by steam locomotives is one of the main factors causing air pollution and the greenhouse effect. The concentration of exhaust gas emitted by locomotives during idle speed (such as the red light at intersections) is several times that of normal driving, so it is necessary to effectively prevent them. The best way to discharge exhaust gas from an locomotive is to turn off the engine.

In addition, due to the increasingly stringent requirements of environmental protection regulations, national environmental protection related units gradually require steam and locomotives to wait for traffic lights, traffic jams, and roadside suspensions, that is, when idle speed exceeds a certain period of time (such as 3 minutes), it must be mandatory. The engine is off. Therefore, how to control the engine to automatically extinguish the flame at idle speed, suppress the gas emissions of steam and locomotives, and reduce the consumption of gasoline fuel is an urgent problem for vehicle manufacturers.

Generally, the locomotive start and stop modes mostly use the key to turn the locomotive lock. Please refer to Figure 1 for a schematic diagram of the circuit of the engine start and stop system. Generally speaking, when starting the engine 70, the rider needs to turn the locomotive with the right hand key. The lock head, that is, the power switch 74 is first activated to connect the battery 73, and then the brake switch 75 is activated by the left hand. At this time, the brake light 76 will be bright, that is, the brake circuit must be turned on before the engine 70 can be started to avoid the explosion, and then the right hand The start switch 77 is pressed, the start control motor 79 is turned on, the starter motor 78 is turned on, and the engine 70 is started via the power control switch 71 and the igniter 72. The related information of the engine 70 operation is displayed on the meter indicator light 80. In addition, when the engine 70 is to be turned off during idle speed, the rider needs to reverse the key to cut off the power. Therefore, for the locomotive rider, during the engine stall and start-up process, both hands must move back and forth between the handlebar and the lock of the locomotive, which is very cumbersome and inconvenient to operate, which is not very ideal.

At present, the existing automatic idle stop and start system is controlled by the engine control unit to idle the engine or start the engine again. When the engine is to be idling, the engine control unit will extract the external signal to implement engine stall, such as vehicle speed, engine speed, throttle opening, engine temperature and so on. In addition, when the engine is to be restarted, the engine control unit will receive an external signal to start. However, relying too much on the engine control unit will cause the entire idle-speed flame-extinguishing system to be too rigid, standard, and standardized. It is not completely compatible with today's complex urban metropolitan cycling mode. For example, when the driver waits for the traffic light, when the red light ends and the green light is on, the automatic idle stop device just stops the engine, and the driver has to restart the engine, thus causing engine gear loss and energy waste. Very ideal, there is still room for improvement.

Inventors for this reason, in the spirit of active invention, think of an engine idling device that can solve the above problems, after several research experiments to complete the present invention.

The main object of the present invention is to provide an engine idle stop device that can control engine start or engine stall with driver's free request. In other words, the engine's idle stop and start is completely determined by the driver's will. When the driver decides to turn off the engine or start the engine, just operate an integrated switch unit, the engine can be turned off or restarted. That is, the driver needs to operate an integrated switch unit according to the actual road condition, and the engine control unit receives the flameout trigger command sent by the integrated switch unit, and the engine control unit performs the flameout action; Starting the engine, the driver needs to operate the integrated switch unit according to the actual road conditions. The engine control unit receives the start trigger command sent by the integrated switch unit, and the engine control unit performs the engine restart action.

In order to achieve the above object, the engine idle-extinguishing device of the present invention is assembled on a locomotive having a starter motor, comprising: an engine, a fuel injector, a temperature sensor, an idle indicator light, a switch unit, and An engine control unit. The fuel injector is used to provide a fuel supply engine; the temperature sensor is set on one of the locomotives for detecting the temperature of the object; the idle indicator is electrically connected to the engine control unit when the temperature sensor detects When the temperature of the object is greater than or equal to a predetermined temperature, the idle indicator light is turned on; the switch unit is used by the driver to control the engine to be turned off or started; the engine control unit is electrically connected to the idle indicator light, the fuel injector, the temperature sensor and the switch unit .

When the engine is in the starting state, the idle indicator is turned on and the switch unit's flameout command is pressed, the engine control unit outputs a signal to the injector to control the engine to stall. Thereby, the driver can manually operate the switch unit according to the actual road condition to turn off the engine. Here, the idle indicator turns on, indicating that the engine has warmed up.

The signal outputted by the engine control unit to the injector may be an injection pulse width electronic signal of 0 ms.

In addition, when the engine is in the starting state and the idle indicator is off, even if the flameout command of the switch unit is pressed, the engine control unit does not output a signal to control the engine to extinguish to the injector. That is, when the idle indicator is off, pressing the switch unit has no effect. Here, the idle indicator is off, indicating that the engine is still warming up.

The invention may further comprise a vehicle speed sensor electrically coupled to the engine control unit, the vehicle speed sensor for measuring the speed of the locomotive. When the engine is in the starting state, the idle speed indicator is turned on, the flameout command of the switch unit is pressed, and the vehicle speed measured by the vehicle speed sensor is less than a predetermined vehicle speed, the engine control unit outputs a fuel injection signal of 0 ms to the fuel injector to control the engine. Turn off the fire. Here, the predetermined vehicle speed can be set to 3 km/h, 2 km/hour or other speed. That is, the present invention may further impose a restriction condition that the switch unit can be manually operated to extinguish the engine only at a low speed.

The engine control unit can be electrically connected to the starter motor. When the engine is in the idle stop state, the idle indicator is turned on, and the start command of the switch unit is pressed, the engine control unit outputs a signal to the starter motor to start the engine.

The above switch unit can be a bouncing bidirectional switch unit, two independent switches or other equivalent structure of the switch unit. That is, if the switch unit is a bouncing bidirectional switch unit, the flameout command and the start command are respectively located on two sides of the switch unit, and when any one of the flameout command or the start command is pressed, a corresponding signal is output, and the force of the press is shifted. After the switch, the switch unit will automatically return to the middle position and no signal will be output. In addition, if the switch unit is a combination of two independent switches, one is a flameout switch and the other is a start switch.

The temperature sensor can be mounted on the cylinder head of the engine, and the predetermined temperature can be set to 100 °C. That is, when the temperature of the cylinder head is less than 100 ° C, it means that the engine has just started, and it is still in the warm-up phase, and pressing the switch unit at this time has no effect. When the temperature of the cylinder head is greater than or equal to 100 ° C, it means that the engine has been warmed up before the switch unit can be manually operated to extinguish the engine. In addition, the predetermined temperature may also be set to a fixed value between 90 and 110 ° C, depending on the size of the engine and the stroke.

Of course, when the temperature sensor is installed in different positions, the corresponding predetermined temperature may be different. For example, if the temperature sensor is installed in the intake pipe between the air cleaner and the throttle valve, the predetermined temperature can be set to 40 °C. If the temperature sensor is installed in the intake pipe between the cylinder head and the throttle valve, the predetermined temperature can be set to 70 °C. In addition, if the temperature sensor is installed in the oil tank of the locomotive to measure the temperature of the oil, the predetermined temperature can be set to 85 °C.

Please refer to FIG. 2 and FIG. 3 , which are respectively a system architecture diagram and a control flowchart of a preferred embodiment of the present invention. The engine idle reduction device of the embodiment is disposed on a locomotive having a starter motor 22, and the engine idle stop device comprises: an engine 20, an injector 21, a temperature sensor 11, an idle indicator light 12, A switch unit 15, a vehicle speed sensor 13 and an engine control unit 30.

The fuel injector 21 provides fuel to the engine 20; the temperature sensor 11 is disposed on one of the locomotives for detecting the temperature of the object; the idle indicator light 12 is electrically connected to the engine control unit 30 when the temperature is sensed. When the temperature of the object is greater than or equal to a predetermined temperature, the idle speed indicator 12 is turned on; the speed sensor 13 is used to measure the speed of the locomotive; and the switch unit 15 is used to control the engine 20 to be turned off or started. The engine control unit 30 is electrically connected to the idle indicator light 12, the vehicle speed sensor 13, the temperature sensor 11, the fuel injector 21, the switch unit 15, and the starter motor 22. When the engine 20 is in the starting state, the idle indicator light 12 is turned on and the vehicle speed is sensed. When the vehicle speed measured by the device 13 is less than a predetermined vehicle speed, if the flameout command of the switch unit 15 is pressed, the engine control unit 30 outputs a signal to the injector 21 to control the engine 20 to be turned off.

In this embodiment, the signal output from the engine control unit 30 to the injector 21 is a pulse width electronic signal of 0 ms, that is, the engine control unit 30 outputs a signal to temporarily eject the injector 21. The amount of oil in the opening does not cause the injector 21 to be inactive, but causes the engine 20 to be turned off. Further, in the present embodiment, the predetermined vehicle speed is 3 km/h, that is, the flameout command of the switch unit 15 can be manually operated only at a low speed to cause the engine 20 to be turned off.

In addition, in the embodiment, the temperature sensor 11 is assembled on the cylinder head of the locomotive. When the temperature sensor 11 detects that the temperature of the cylinder head is less than 100 ° C, the idle indicator light 12 is not illuminated, indicating that the engine 20 is Still in the warm-up phase. In addition, when the temperature sensor 11 detects that the temperature of the cylinder head is greater than or equal to 100 ° C, the idle indicator light 12 is turned on at this time, indicating that the engine 20 is in the heat engine stage. That is, the engine 20 can be manually turned off by the flameout command of the switch unit 15 only when the engine 20 is already in the heat engine stage.

As shown in the figure, when the engine 20 is in the starting state, the idle indicator light 12 is turned off, and even if the vehicle speed measured by the vehicle speed sensor 13 is less than a predetermined vehicle speed, when the flameout command of the switch unit 15 is pressed, the engine control unit 30 does not The output control engine 20 outputs a signal indicating the flameout to the injector 21. That is, when the engine 20 is still in the warm-up phase, the flameout command of the push switch unit 15 has no effect.

Further, when the engine 20 is in the idle stop state, the idle indicator 12 is turned on, and the start command of the switch unit 15 is pressed, the engine control unit 30 outputs a signal to the starter motor 22 to start the engine 20. That is, the engine 20 can be started by manually operating the start command of the switch unit 15 only when the engine 20 is already in the heat engine stage. Similarly, if the engine 20 is still in the warm-up phase, that is, the idle indicator light 12 is not lit, pressing the start command of the switch unit 15 has no effect.

In this embodiment, the switch unit 15 is a bouncing bidirectional switch unit 15. The flameout command and the start command are respectively located on two sides of the switch unit 15, and when one of the flameout command or the start command is pressed, a corresponding output is output. After the power of the pressing force is removed, the switch unit 15 automatically returns to the middle position, and no signal is output.

Please refer to FIG. 4 for a schematic diagram of the air intake device of the locomotive engine, and please refer to FIG. 2 and FIG. 3 together, and the air intake path is sequentially the intake pipe 51, the air cleaner 52, the intake pipe 53, and the throttle. Valve 54, intake manifold 55, intake manifold 58, and cylinder head 57. An oil supply unit 56 is fixed to the intake manifold 55. The air is mixed with the fuel and then burned into the combustion chamber in the cylinder head 57. The burned exhaust gas is discharged from the exhaust pipe 59.

In the second embodiment of the present invention, when the temperature sensor 11 is fixed in the intake pipe 53 between the air cleaner 52 and the throttle valve 54, the predetermined temperature is set to 40 °C. That is, when the temperature sensor 11 detects that the temperature in the intake pipe 53 is less than 40 ° C, it indicates that the engine 20 is still in the warm-up phase, and at this time, pressing the flame-out command or the start command of the switch unit 15 has no effect. In addition, when the temperature sensor 11 detects that the temperature in the intake pipe 53 is greater than or equal to 40 ° C, it indicates that the engine 20 is in the heat engine phase, and at this time, the flameout command or the start command of the switch unit 15 can be manually operated to make the engine 20 Turn off or start.

In the third embodiment of the present invention, when the temperature sensor 11 is fixed in the intake pipe 58 between the cylinder head 57 and the throttle valve 54, the predetermined temperature is set to 70 °C. That is, when the temperature sensor 11 detects that the temperature in the intake pipe 58 is less than 70 ° C, it indicates that the engine 20 is still in the warm-up phase, and at this time, pressing the flame-off command or the start command of the switch unit 15 has no effect. In addition, when the temperature sensor 11 detects that the temperature in the intake pipe 58 is greater than or equal to 70 ° C, it indicates that the engine 20 is in the heat engine phase, and at this time, the flameout command or the start command of the switch unit 15 can be manually operated to make the engine 20 Turn off or start.

Please refer to FIG. 5 for a schematic diagram of a locomotive engine with a cooling oil function. Referring to FIG. 2 and FIG. 3 together, the oil of the sump 61 is output by the oil pump 62 and then enters the oil cooler 63 through the front section of the conveying line 64. The heat exchange, the cooled oil is then passed into the cylinder block 65 of the engine 20 through the downstream portion of the delivery line 64 for cooling and lubrication.

In the fourth embodiment of the present invention, when the temperature sensor 11 is fixed in the hood 61 of the locomotive to measure the temperature of the oil, the predetermined temperature is set to 85 °C. That is, when the temperature sensor 11 detects that the oil temperature in the oil tank 61 is less than 85 ° C, it indicates that the engine 20 is still in the warm-up phase, and at this time, pressing the flame-out command or the start command of the switch unit 15 has no effect. In addition, when the temperature sensor 11 detects that the oil temperature is greater than or equal to 85 ° C, it indicates that the engine 20 is in the heat engine stage, and at this time, the flameout command or the start command of the switch unit 15 can be manually operated to cause the engine 20 to be turned off or started.

The above-mentioned embodiments are merely examples for convenience of description, and the scope of the claims is intended to be limited to the above embodiments.

11. . . Temperature sensor

12. . . Idle speed indicator

13. . . Speed sensor

15. . . Switch unit

20. . . engine

twenty one. . . Injector

twenty two. . . start the motor

30. . . Engine control unit

51. . . Intake pipe

52. . . air filter

53. . . Intake pipe

54. . . Throttle valve

55. . . Intake manifold

56. . . Oil supply unit

57. . . Cylinder head

58. . . Intake pipe

59. . . exhaust pipe

61. . . Oil tank

62. . . Oil pump

63. . . Oil cooler

64. . . Conveying line

65. . . Cylinder block

70. . . engine

71. . . Power control switch

72. . . lighter

73. . . battery

74. . . switch

75. . . Brake switch

76. . . Brake lamp

77. . . Start switch

78. . . start the motor

79. . . Start control switch

80. . . Instrument indicator

Figure 1 is a schematic diagram of a conventional circuit for starting and extinguishing an engine

2 is a system architecture diagram of a preferred embodiment of the present invention.

3 is a control flow diagram of a preferred embodiment of the present invention.

Figure 4 is a schematic diagram of the air intake device of the locomotive engine.

Figure 5 is a schematic diagram of a locomotive engine with a cooling oil function.

11. . . Temperature sensor

12. . . Idle speed indicator

13. . . Speed sensor

15. . . Switch unit

20. . . engine

twenty one. . . Injector

twenty two. . . start the motor

30. . . Engine control unit

Claims (8)

An engine idle speed extinguishing device is disposed on a locomotive having a starter motor, comprising: an engine; a fuel injector for providing a fuel to the engine; and a temperature sensor disposed on one of the locomotives The object is used to detect the temperature of the object, the object is the locomotive between the air filter and the throttle valve; an idle indicator light, when the temperature sensor detects the temperature of the object When the temperature is greater than or equal to a predetermined temperature, the idle indicator light is turned on, the predetermined temperature is 40 ° C; a switch unit for controlling the engine to be turned off or started; and an engine control unit electrically connected to the idle indicator light, The fuel injector, the temperature sensor and the switch unit, when the engine is in an active state, the idle indicator light is turned on and the flameout command of the switch unit is pressed, the engine control unit outputs a signal to the fuel injector to control The engine is off. An engine idle stop device is disposed on a locomotive having a starter motor, comprising: an engine and a fuel injector for providing a fuel to the engine; and a temperature sensor disposed on one of the locomotives For detecting the temperature of the object, the object is the intake pipe between the cylinder head and the throttle valve; an idle indicator light, when the temperature sensor detects that the temperature of the object is greater than Or equal to a predetermined temperature, the idle indicator light is turned on, the predetermined temperature is 70 ° C; a switch unit for controlling the engine to be turned off or activated; and an engine control unit electrically connected to the idle indicator light, the spray a fuel nozzle, the temperature sensor and the switch unit, when the engine is in an active state, the idle indicator light is turned on and the flameout command of the switch unit is pressed, the engine control unit outputs a signal to the fuel injector to control the The engine is off. An engine idle stop device is disposed on a locomotive having a starter motor, comprising: an engine and a fuel injector for providing a fuel to the engine; and a temperature sensor disposed on one of the locomotives For detecting the temperature of the object, the object is in the locomotive of the locomotive; an idle indicator light, when the temperature sensor detects that the temperature of the object is greater than or equal to a predetermined temperature, the idle indicator light is turned on. The predetermined temperature is 85 ° C; a switch unit for controlling the engine to be turned off or activated; and an engine control unit electrically connected to the idle indicator light, the fuel injector, the temperature sensor, and the switch unit, When the engine is in the starting state, the idle indicator is turned on and the flameout command of the switch unit is pressed, the engine control unit outputs a signal to the injector to control the engine to stall. The engine idle speed extinguishing device according to claim 1, 2, or 3, wherein the signal is a 0 ms injection pulse width electronic signal. The engine idle speed extinguishing device according to claim 1, 2, or 3, wherein the engine control unit does not when the engine is in an active state, the idle indicator is turned off, and the extinguishing command of the switch unit is pressed. The output controls the signal that the engine is turned off to the injector. The engine idle speed extinguishing device according to claim 1, 2, or 3, further comprising a vehicle speed sensor electrically connected to the engine control unit, configured to measure the speed of the locomotive, when the engine is in a starting state When the idle indicator light is turned on, the flameout command of the switch unit is pressed, and the vehicle speed measured by the vehicle speed sensor is less than a predetermined vehicle speed, the engine control unit outputs a signal to the fuel injector to control the engine to stall. The engine idle speed extinguishing device of claim 1, wherein the engine control unit is electrically connected to the starter motor, and when the engine is in an idle stop state, the idle speed indicator is turned on and the switch unit is When the start command is pressed, the engine control unit outputs a signal to the starter motor to start the engine. The engine idle speed extinguishing device according to claim 1, 2, or 3, wherein the switch unit is a bouncing bidirectional switch unit.