TWI476323B - Engine start device - Google Patents

Description

Engine starter

The present invention relates to an engine starting device, and more particularly to an engine starting device suitable for a hand shifting locomotive.

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 turn off 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.

In general, the locomotive flameout method mostly uses the key to turn the locomotive lock to turn off the engine. To restart the engine, the locomotive lock must be turned in the opposite direction of the key, and then the engine start switch can be started to start the engine. For the locomotive rider. During the engine's flameout and start-up process, the right hand must move back and forth between the handlebar and the lock of the locomotive. The operation is very cumbersome and inconvenient, which is not very ideal.

In addition, conventional shifting locomotives need to be coupled or cut off from the engine power to the transmission system by means of a hand-operated mechanism to change gears or transmit power. When the engine needs to operate in the idle state, the rider needs to shift the gear position to neutral or continue to pull the clutch, so that the engine power is completely cut off to the transmission system, ensuring that the engine maintains the rotation under no load. .

In order to improve the engine's pollution at idle speed, the conventional locomotive idle speed extinguishing device is mostly applied to the transmission system of the stepless shifting mechanism. The stepless transmission system uses the engine speed to control the engagement of the centrifugal clutch. When the engine is twirling, the centrifugal force is insufficient, so that the clutch remains in the disengaged state, so that the power cannot be transmitted to the shifting system, so that the flameout operation can be performed. When restarted, the engine returns to the tumbling speed, but this speed does not allow the clutch to be coupled to the drive train, and there will be no problem of vehicle overshoot.

When the transmission system of the locomotive is hand-operated, the engine is operated at idle speed, and the rider must completely cut the transmission system away from the engine (ie, the neutral state) through the clutch, so that the power can be turned off without the transmission. launch. If the rider does not separate the engine from the transmission system, when the engine is turned off again, there is a concern about the problem of vehicle rushing, which is not ideal, and there is room for improvement.

Inventors for this reason, in the spirit of active invention, think of an engine starting 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 starting device which can improve the potential risk of vehicle rushing when the hand-operated shifting engine is idling and restarting, because the engine is not in the neutral state. In this way, the clutch can be ensured to be completely separated from the transmission system in the disengaged position, so that the engine can be started, and the problem of overburden can be completely avoided.

In order to achieve the above object, the engine starting device of the present invention is assembled on a hand-held shifting machine with an engine, comprising: a touch switch, a clutch pull handle, a starter motor for starting the engine, and a Engine control unit. The touch switch is fixed on one of the handle fixing seats of the locomotive; the clutch puller is fixed on the handle fixing seat and located in front of the touch switch; the engine control unit is electrically connected to the touch switch and the starter motor. When the engine is in the neutral state, and the clutch lever is pulled to the position to touch the touch switch, the engine control unit outputs a signal to control the start of the motor to start the engine.

The engine control unit can control the starter motor operation via a normally closed relay or other equivalent component. Also, when the engine speed reaches the threshold, the engine control unit stops outputting any signal to the starter motor to control the starter motor to stop running.

The invention may further include a neutral indicator light electrically connected to the engine control unit. When the engine is in a non-neutral state and the neutral indicator is not lit, the engine control unit disconnects the circuit that activates the switch and the starter motor. That is, when the engine is in a non-neutral state, the starter motor will not start. In addition, when the engine is in the non-neutral state and the neutral indicator is not lit, the engine control unit can be caused to not turn off the circuit of the touch switch and the start motor by pressing the reset of the touch switch. At this time, if the touch switch is pressed, the starter motor can be activated; if the touch switch is not pressed, the starter motor will not start.

In addition, when the engine is in the neutral state and the neutral indicator is on, the engine control unit does not disconnect the circuit circuit that activates the switch and the starter motor. That is, when the engine is in the neutral state, if the touch switch is pressed, the starter motor can be activated; if the touch switch is not pressed, the starter motor will not start.

The engine control unit can be electrically connected to a vehicle speed sensor of a measuring machine, an engine speed sensor of a measuring engine, and a timer. When the engine is in a running state, the speed measured by the speed sensor is less than a predetermined speed and When the engine speed measured by the engine speed sensor is less than a predetermined speed, the timer starts counting, and when the above condition is established for a duration exceeding a predetermined time, the engine control unit determines that the locomotive is in idle speed and outputs a signal. The engine is turned off at an idle speed.

The predetermined speed measured by the above vehicle speed sensor can be set to 3 km/h, 2 km/hour or other speed. The predetermined speed measured by the engine speed sensor can be set to 1800 revolutions per minute (rpm), 1600 revolutions per minute (rpm), or other number of revolutions. The predetermined time set by the timer can be set to 2 seconds, 5 seconds or other time.

The engine control unit can be electrically connected to a battery voltage sensor of the measuring locomotive. When the battery voltage measured by the voltage sensor is lower than a predetermined voltage, the timer is not timed. That is, when the voltage of the battery is in a low voltage state, in order to avoid insufficient power to restart the engine, the engine control unit does not control the engine to ignite the flame, that is, when the battery is in a low voltage state, regardless of the data measured by the various sensors described above. Why does it meet the above conditions?

The predetermined voltage measured by the above voltage sensor can be set to 70% of the normal operating voltage, or 80% or other voltage value. The normal operating voltage of a typical locomotive battery is 12 volts (V). If the predetermined voltage is set to 80% of the normal operating voltage, the predetermined voltage is set to 9.6 volts (V).

Please refer to FIG. 1 , FIG. 2 and FIG. 3 , which are respectively a perspective view of a locomotive and a perspective view of a locomotive clutch handle and a circuit diagram thereof according to a preferred embodiment of the present invention. The engine starting device of the embodiment is assembled on a hand-operated shifting locomotive 1. The locomotive 1 has an engine 10, a neutral indicator light 15, a battery 18, a touch switch 30, a clutch pull 31, and a The motor 40, an engine control unit 20, a vehicle speed sensor 21, an engine speed sensor 22, a timer 23, a voltage sensor 25, and a relay 45 are activated.

The vehicle speed sensor 21 is used to measure the vehicle speed of the locomotive 1, the engine speed sensor 22 is used to measure the rotation speed of the engine 10, and the voltage sensor 25 is used to measure the voltage of the battery 18 of the locomotive 1, and the motor 40 is started. Used to start the engine 10.

As shown in the figure, the touch switch 30 is fixed on one of the handle fixing bases 33 of the locomotive 1; the clutch puller 31 is fixed on the handle fixing base 33 and located in front of the touch switch 30; the engine control unit 20 is electrically connected to the touch switch 30. Vehicle speed sensor 21, engine speed sensor 22, timer 23, voltage sensor 25, neutral indicator light 15, engine 10 and relay 45.

When the engine 10 is in the flameout state in the neutral state, and the clutch lever 31 is pulled to the position to touch the touch switch 30, the engine control unit 20 outputs a signal to the relay 45, thereby controlling the starter motor 40 to operate to start the engine. 10. In addition, when the rotational speed of the starter motor 40 reaches the threshold of the engine 10, the engine control unit 20 stops outputting any signal to the relay 45, thereby controlling the starter motor 40 to stop operating. In the present embodiment, the relay 45 is a normally closed relay 45.

In other words, when the engine 10 is in the neutral state, the neutral indicator light 15 is electrically connected to the engine control unit 20 and the display is turned on, and the engine control unit 20 does not open the circuit circuit of the touch switch 30 and the relay 45 to allow the engine to control The unit 20 can control the operation of the starter motor 40, depending on whether the touch switch 30 is pressed. If the clutch puller 31 is pulled to the position and touches the touch switch 30, the starter motor 40 will start; if the clutch puller 31 is not pulled, When the touch switch 30 is not pressed, the starter motor 40 does not start. Thereby, it can be ensured that the clutch 10 is completely separated from the transmission system in the disengaged position, so that the engine 10 can be started, and the problem of overburden can be avoided.

In addition, when the engine 10 is in the non-neutral state, the neutral indicator 15 is not illuminated, the engine control unit 20 will disconnect the circuit of the touch switch 30 and the relay 45, and the engine control unit 20 cannot control the start. The motor 40 operates. In this way, the engine 10 cannot be started, and the problem of overburden can be completely avoided.

However, when the engine 10 is in the non-neutral state and the engine 10 needs to be started, it is only necessary to press the reset switch 30 (ie, the clutch lever 31 is pulled to the position and touches the touch switch 30). When the clutch lever 31 is released, the engine control unit 20 detects that the touch switch 30 has a high and low potential difference, indicating that the touch switch 30 has been reset, and the engine control unit 20 automatically resets the open circuit of the touch switch 30 and the starter motor 40. That is, the circuit that activates the switch 30 and the starter motor 40 is not disconnected. At this time, if the touch switch 30 is pressed again, the starter motor 40 can be activated to start the engine 10.

As shown in FIG. 3, when the engine 10 is in the starting state, the vehicle speed measured by the vehicle speed sensor 21 is less than a predetermined vehicle speed, and the engine speed measured by the engine speed sensor 22 is less than a predetermined speed and the amount of the voltage sensor 25 When the measured voltage of the battery 18 is higher than a predetermined voltage, the timer 23 starts counting, and when the above condition is established for a duration exceeding a predetermined time, the engine control unit 20 controls the engine 10 to turn off.

In this embodiment, the predetermined vehicle speed is set to 3 km/hour, the predetermined rotation speed is set to 1800 rpm, the predetermined voltage is set to 80% of the normal operating voltage of the battery 18, and the normal working voltage of the general locomotive battery is 12 volts. (V), that is, the predetermined voltage of the present embodiment is set to 9.6 volts (V); the predetermined time is set to 2 seconds.

That is, in the present embodiment, when the vehicle speed measured by the vehicle speed sensor 21 is less than 3 km/hour and the engine speed measured by the engine speed sensor 22 is less than 1800 rpm, the engine control unit 20 determines At this point the engine 10 is in idle speed. Whether the engine 10 in the idle speed is to be idling or not depends on whether the voltage of the battery 18 measured by the voltage sensor 25 is higher than 9.6 volts, if the voltage of the battery 18 is at a low voltage state (ie, less than 9.6 volts). When the engine 10 is restarted to avoid insufficient power, the engine control unit 20 does not control the engine 10 to stall. In other words, when the battery 18 is in a low voltage state, regardless of the data measured by the vehicle speed sensor 21 and the engine speed sensor 22, it does not idle.

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.

1. . . locomotive

10. . . engine

15. . . Neutral indicator

18. . . battery

20. . . Engine control unit

twenty one. . . Speed sensor

twenty two. . . Engine speed sensor

twenty three. . . Timer

25. . . Voltage sensor

30. . . Touch switch

31. . . Clutch pull

33. . . Handle holder

40. . . start the motor

45. . . Relay

1 is a perspective view of a locomotive in accordance with a preferred embodiment of the present invention.

2 is a perspective view of a locomotive clutch handle according to a preferred embodiment of the present invention.

3 is a circuit diagram of a preferred embodiment of the present invention.

10. . . engine

15. . . Neutral indicator

18. . . battery

20. . . Engine control unit

twenty one. . . Speed sensor

twenty two. . . Engine speed sensor

twenty three. . . Timer

25. . . Voltage sensor

30. . . Touch switch

40. . . start the motor

45. . . Relay

Claims (10)

An engine starting device is disposed on a hand-held shifting machine having an engine, comprising: a touch switch fixed on one of the handle fixing seats of the locomotive; and a clutch puller fixed on the handle fixing seat Up and in front of the touch switch; a starter motor for starting the engine; and an engine control unit electrically connected to the touch switch and the starter motor; when the engine is in a neutral state, the flame is off The clutch handle is pulled to touch the touch switch, and the engine control unit outputs a signal to control the starter motor to start the engine. The engine starting device of claim 1, wherein the engine control unit controls the starting motor to operate via a relay. The engine starting device of claim 1, wherein when the engine speed reaches a threshold, the engine control unit stops outputting any signal to the starting motor to control the starting motor to stop. The engine starting device of claim 1, further comprising a neutral indicator electrically connected to the engine control unit, when the engine is in a non-neutral state, the neutral indicator is not illuminated, The engine control unit disconnects the touch switch from the circuit of the starter motor. The engine starting device of claim 4, wherein when the neutral indicator is not lit, the engine control unit can cause the engine control unit to not disconnect by pressing the reset of the touch switch The touch switch and the circuit of the starter motor. The engine starting device of claim 1, wherein the engine control unit does not disconnect the circuit of the trigger switch and the starter motor when the engine is in a neutral state and the neutral indicator is illuminated. The engine starting device of claim 1, further comprising a vehicle speed sensor connected to the engine control unit for measuring a speed sensor of the locomotive, an engine speed sensor for measuring the engine, and a timer When the engine is in the starting state, the vehicle speed measured by the vehicle speed sensor is less than a predetermined vehicle speed, and the engine speed measured by the engine speed sensor is less than a predetermined speed, the timer starts counting, and when the above condition is met The engine control unit controls the engine to stall when the duration exceeds a predetermined time. The engine starting device of claim 7, wherein the predetermined speed refers to 3 km/h, and the predetermined rotational speed refers to 1800 revolutions per minute (rpm), and the predetermined time refers to 2 seconds. The engine starting device of claim 7, further comprising a voltage sensor for measuring a battery of the locomotive electrically connected to the engine control unit, wherein the voltage measured by the voltage sensor is lower than one The timer does not count when the voltage is predetermined. The engine starting device of claim 9, wherein the predetermined voltage is 9.6 volts (V).