TWI463066B - Engine idle stop and start the control device - Google Patents

Description

Engine idle stop and start control device

The invention relates to a control device for idling and starting of an engine, in particular to a control device suitable for idling and starting of an engine of a 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 automatically turn off and start quickly at idle speed, suppress gas emissions from steam and locomotives, and reduce the consumption of gasoline fuel is an urgent problem for vehicle manufacturers.

In addition, the locomotive engine idle stop and start system refers to the locomotive in the static situation, the engine can automatically turn off after maintaining the idle speed for a period of time, before the travel can use the traditional or non-traditional electronic start means to start the engine energy-saving device.

Generally, the locomotive flameout method mostly uses the key to turn the locomotive lock to turn off the engine. If the engine is to be restarted, the locomotive lock must be turned in the opposite direction of the key, and then the start switch of the starter motor can be pressed to start the starter motor, and then the engine is started. . 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 commonly known as the traditional starting means. Therefore, in the case of general riding, when the locomotive of the conventional starting means stops the idling, the vibration and noise of the engine operation are important features for the ordinary person to determine whether the locomotive has a flameout. The driver must turn the locomotive by turning off the locomotive. The action of the lock head causes the locomotive to stall and is activated by a conventional electronic starting means that opens the switch (ie, uses the key to reversely rotate the locomotive lock) and presses the start switch of the starter motor.

Some locomotives that have been on the market in recent years use the electronic control unit (ECU) of the jet engine and the grip sensor that detects whether the handle of the locomotive is gripped and the throttle perception of the throttle opening of the locomotive engine. The electric connection is made. When the locomotive engine is in the flameout state, and the grip sensor detects that the handle is gripped and the throttle sensor measures the throttle opening of the locomotive engine to be non-zero, the control unit outputs a signal to control the start. The motor runs and its speed reaches the threshold of the starter engine for the engine of the engine. That is, when the locomotive is idle and the engine is turned off, the detection signals of the gripper and the throttle sensor can be used to control the start of the motor and then the engine, which is commonly known as the non-traditional electronic starting means. .

Therefore, the locomotive equipped with the above-mentioned non-traditional electronic starting device system will automatically turn off after stopping the idling for a certain period of time, and the driver does not need to close the electric door, and only needs to use the traditional electronic type (ie, the start switch for pressing the starter motor) or non-traditional electronic The type (ie, the electronic control unit directly controls the starter motor operation by using the sensor or the detection signal of the touch switch) can start the engine by starting the means.

The problem to be solved by the present invention is that if a locomotive equipped with an idling stop and start system is automatically turned off after a certain period of idling, the driver may not leave the electric door because of negligence, and the ordinary person cannot determine whether the locomotive is actually extinguished or not. Instead of idling, the possibility of accidental exposure to non-traditional electronic starting methods may cause the locomotive to start, posing a potential hazard.

Because of this, in the spirit of active invention, this is a control device for igniting flameout and start-up of an engine that can solve the above problems, and has completed the present invention after several research experiments.

The main object of the present invention is to provide a safety mechanism for the engine idle stop and start system, which is to detect whether the main parking stand is standing up and feedback the sensing signal to the engine control center on the main parking stand When stationed, the engine control center cancels the non-traditional electronic starting means to start the locomotive, and can only start the locomotive using traditional electronic starting means. In addition, when the main parking stand is not stationed, the traditional and non-traditional electronic starting means can start the locomotive.

In order to achieve the above object, the engine idle stop and start control device of the present invention is assembled on a locomotive having an engine and a starter motor, and the control device comprises: a parking stand sensor, a moving switch and an engine. control unit. The parking stand sensor is configured to detect whether the main parking stand of the locomotive is parked, the starting switch is electrically connected to the starting motor for starting the starting motor, and the engine control unit is electrically connected to the parking stand sensor and the starting motor; When the engine is in the flameout state, and the parking stand sensor detects that the main parking stand of the locomotive is parked, the engine control unit does not output any signal to the starting motor, and the starting motor can only be started by the starting switch, but not by the engine. The control unit is activated.

The engine control unit may further include a vehicle speed sensor of the measuring machine, an engine speed sensor of a measuring engine, and a timer. When the engine is in the starting state, the speed measured by the speed sensor is less than a predetermined speed and the engine. When the engine speed measured by the 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 to The control engine is idling off.

The invention may further include a signal switch electrically connected and assembled between the crank position sensor of the measuring engine crankshaft and the engine control unit. When the locomotive is in idling operation, the signal switch can be used to disconnect the circuit circuit of the crankshaft position sensor and the engine control unit. Even if the engine is still rotating, the engine control unit receives the signal of the crankshaft position sensor and the flameout (the crankshaft does not The rotation is the same, so that the engine is not rotated, the required fuel injection amount is zero, and the fuel injection signal is immediately stopped, thereby causing the engine to idling.

The above signal switch can be a normally closed relay or other equivalent component.

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 may further include a voltage sensor for measuring the battery of the 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 prevent the power from being insufficient to restart the engine, the engine control unit does not control the signal switch to be turned off, and the circuit of the crank position sensor and the engine control unit is still closed, that is, when the battery is low. In the voltage state, regardless of whether the data measured by the above various sensors meets the above conditions, the ignition is not idle.

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).

The present invention may further include a touch switch electrically connected to the engine control unit, which may be disposed near the handle of the locomotive, and the driver may touch the touch switch by touching the touch switch or pressing the brake handle by rotating the fueling handle. When the engine is in the flameout state, the parking stand sensor detects that the main parking stand of the locomotive is not parked, and the touch switch is activated, the engine control unit outputs a signal to control the start of the motor operation, thereby starting the engine.

In addition, when the engine is in the flameout state, the parking stand sensor detects that the main parking stand of the locomotive is not parked, and the driver can control the starting motor by being activated by the above-mentioned touch switch, and can also be pressed by pressing Start the switch and control the starter motor to start, and then start the engine.

Please refer to FIG. 1 and FIG. 2 , which are respectively a perspective view of a locomotive and a system architecture diagram of a locomotive according to a preferred embodiment of the present invention. The engine idle stop and start control device of the embodiment is set on a locomotive 1 , and the locomotive 1 is The utility model has an engine 10, a signal switch 15, a crank position sensor 12, a battery 18, a parking stand sensor 28, a touch switch 30, a starter motor 40, a movable switch 41 and a vehicle speed sensor. 21. Engine speed sensor 22, voltage sensor 24 and engine control unit 20 of timer 25.

The vehicle speed sensor 21 is used to measure the speed of the locomotive 1 , the engine speed sensor 22 is used to measure the rotation speed of the engine 10 , and the parking stand sensor 28 is used to detect the main parking stand 11 of the locomotive 1 . Whether or not the voltage sensor 24 is used to measure the voltage of the battery 18 of the locomotive 1, the start switch 41 is electrically connected to the starter motor 40 for starting the starter motor 40.

As shown, the engine control unit 20 is electrically connected to the parking stand sensor 28, the touch switch 30 and the starter motor 40, and the signal switch 15 is electrically connected and assembled to the crank position sensor 12 and the engine of the crankshaft of the measuring engine 10. Between the control units 20.

Please refer to FIG. 3 for an engine idle speed flameout flowchart according to a preferred embodiment of the present invention, and please refer to FIG. 2 together. The engine idle speed extinguishing process of this embodiment includes the following steps: when the engine 10 is in the starting state, the engine control unit 20 determines whether the vehicle speed measured by the vehicle speed sensor 21 is less than a predetermined vehicle speed, and the engine measured by the engine speed sensor 22 Whether the rotational speed is less than a predetermined rotational speed and whether the voltage of the battery 18 measured by the voltage sensor 24 is higher than a predetermined voltage (S901). If so, the timer 25 starts counting and judges whether or not the time when the above condition is established continues for more than a predetermined time (S902); otherwise, returns to step S901. In step S902, if subsequently, the engine control unit 20 controls the signal switch 15 to open the circuit circuit of the crank position sensor 12 and the engine control unit 20 (S903); then, the engine control unit 20 determines whether the number of revolutions of the engine 10 is zero ( S904); if then, the engine control unit 20 controls the signal switch 15 to close the circuit loop of the crank position sensor 12 and the engine control unit 20 (S905), at which time the engine 10 has been idling off. In step S904, if not, the process returns to step S903.

The function of the signal switch 15 is that when the locomotive 1 is at idle speed, the signal switch 15 can be controlled by the engine control unit 20, thereby disconnecting the circuit circuit of the crank position sensor 12 and the engine control unit 20, even if the engine 10 is still rotating. The signal of the crankshaft position sensor 12 received by the engine control unit 20 is the same as the flameout (the crankshaft is not rotated), so that the engine 10 is determined not to rotate, the required fuel injection amount is zero, and the fuel injection signal is immediately stopped, thereby prompting the engine 10 Idle the flame.

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, and the other signal switch 15 is a normally closed type relay.

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 24 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). In order to avoid the power shortage to restart the engine 10, the engine control unit 20 does not control the signal switch 15 to be disconnected, that is, the circuit circuit of the crank position sensor 12 and the engine control unit 20 is still closed. 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.

Please refer to FIG. 4 , which is a flow chart of starting the engine of the main parking stand without being parked according to a preferred embodiment of the present invention, and please refer to FIG. 1 and FIG. 2 together. The engine starting process of this embodiment includes the following steps: when the engine 10 is in the flameout state, the parking stand sensor 28 detects that the main parking stand 11 of the locomotive 1 is not parked (S911), and the engine 10 is activated in two ways. First, the first mode is the flow shown in the left half of FIG. 4, in which the rider directly operates the starter switch 40 by manually pressing the start switch 41 to start the engine 10 (S912). Wherein, when the engine 10 is started, the rider releases the start switch 41 and no longer presses, and the starter motor 40 stops operating.

When the engine 10 is in the flameout state, the second starting engine 10 in which the main parking stand 11 of the locomotive 1 is not parked is in the flow shown in the right half of FIG. 4, which is the engine control unit 20 determines whether the touch switch 30 is touched. (S914); if subsequently, the engine control unit 20 outputs a signal control start motor 40 to operate (S915); then, the engine control unit 20 determines whether the engine speed reaches the idle speed of the engine 10 (S916), and if so, the engine control unit 20 determines When the engine is started (S918), the sending of the start signal is stopped; if not, the process returns to step S914. Further, in step S914, if the touch switch 30 is not touched, the engine 10 is still in the flameout state (S917).

In other words, when the engine 10 is in the flameout state, and the parking stand sensor 28 detects that the main parking stand 11 of the locomotive 1 is not parked, both the conventional and non-traditional electronic starting means can start the engine 10.

In general, the touch switch 30 can be disposed near the handle of the locomotive 1, and the driver can touch the touch switch 30 by pressing the fueling handle or pressing the brake handle to touch the touch switch 30, which is a common non-traditional The electronic starting means will not be described here.

Please refer to FIG. 5 , which is a flow chart of starting the engine of the main parking stand according to a preferred embodiment of the present invention, and please refer to FIG. 1 and FIG. 2 together. The engine starting process of this embodiment includes the following steps: when the engine 10 is in the flameout state, the parking stand sensor 28 detects that the main parking stand 11 of the locomotive 1 is parked (S921), and the mode of starting the engine 10 is only one type. As shown in the flow of the left half of FIG. 5, the rider directly presses the start switch 41 to cause the start-up 40 to operate, and then the engine 10 is started (S922). Wherein, when the engine 10 is started, the rider releases the start switch 41 and no longer presses, and when the close-up 40 is started, the operation is stopped.

As shown in the flow of the right half of FIG. 5, when the engine 10 is in the flameout state, the parking stand sensor 28 detects that the main parking stand 11 of the locomotive 1 is parked (S921), and the engine control unit 20 determines whether the touch switch 30 is touched. Touch (S924); if so, the engine control unit 20 does not output a signal to the starter motor 40 (S925), that is, the starter motor 40 cannot be started by the engine control unit 20; then, the engine 10 is still in the flameout state (S927). In step S924, if the touch switch 30 is not touched, the engine 10 is also in the flameout state (S927).

That is, when the engine 10 is in the flameout state, and the parking stand sensor 28 detects that the main parking stand 11 of the locomotive is parked, the engine control unit 20 does not output any signal to the starter motor 40, and the starter motor 40 can only be The starter switch 41 is activated and cannot be started by the engine control unit 20.

In other words, when the engine 10 is in the flameout state, and the parking stand sensor 28 detects that the main parking stand 11 of the locomotive 1 is parked, the engine control center 20 cancels the non-traditional electronic starting means to start the locomotive, and can only be used. The traditional electronic starting means starts the locomotive. Thereby, the common person is prevented from accidentally touching the touch switch 30 electrically connected to the engine control unit 20, posing a potential danger.

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

11‧‧‧Main parking rack

12‧‧‧Crankshaft position sensor

15‧‧‧Signal switch

18‧‧‧Battery

20‧‧‧Engine Control Unit

21‧‧‧Speed Sensor

22‧‧‧Engine speed sensor

24‧‧‧Voltage sensor

25‧‧‧Timer

28‧‧‧Parking stand sensor

30‧‧‧Touch switch

40‧‧‧Starting motor

41‧‧‧Starting switch

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

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

3 is a flow chart of an engine idling flameout in accordance with a preferred embodiment of the present invention.

4 is a flow chart showing the startup of the engine in which the main parking stand is not parked according to a preferred embodiment of the present invention.

FIG. 5 is a flow chart showing the engine starting up of the main parking stand according to a preferred embodiment of the present invention.

10. . . engine

12. . . Crankshaft position sensor

15. . . Signal switch

18. . . battery

20. . . Engine control unit

twenty one. . . Speed sensor

twenty two. . . Engine speed sensor

twenty four. . . Voltage sensor

25. . . Timer

28. . . Parking stand sensor

30. . . Touch switch

40. . . start the motor

41. . . Start switch

Claims (7)

A control device for igniting and starting the engine is set on a locomotive having an engine and a starter motor, comprising: a parking stand sensor for detecting whether the main parking stand of the locomotive is parked; a start switch electrically connected to the starter motor for starting the starter motor; an engine control unit electrically connected to the parking stand sensor and the starter motor, the engine control unit including a vehicle speed sensor for measuring the locomotive, Measure the engine speed sensor of the engine and a timer. When the engine is in the starting state, the speed measured by the vehicle speed sensor is less than a predetermined speed and the engine speed measured by the engine speed sensor is less than a predetermined schedule. At the time of the rotation speed, the timer starts counting, and when the above condition is established for a duration exceeding a predetermined time, the engine control unit controls the engine to idling; and a signal switch is electrically connected and assembled in a measurement Between the crankshaft position sensor of the engine crankshaft and the engine control unit, the signal open relationship disconnects the crank position sensor and the engine control list a circuit loop to control the engine to stall; wherein, when the engine is in a flameout state, and the parking stand sensor detects that the main parking stand of the locomotive is parked, the engine control unit does not output any signal to the The motor is started and the starter motor is started by the starter switch. The control device for idling and starting the engine as described in claim 1, wherein the signal switch is a normally closed relay. The engine idle speed extinguishing and starting control device according to claim 1, wherein the predetermined speed refers to 3 km/hour, and the predetermined rotational speed refers to 1800 rpm, and the predetermined time refers to 2 second. The control device for idling and starting the engine according to claim 1, wherein the engine control unit further comprises a voltage sensor for measuring the battery of the locomotive, and the battery is measured by the voltage sensor. The timer does not count when the voltage is below a predetermined voltage. The engine idle-extinguishing and starting control device as described in claim 4, wherein the predetermined voltage is 9.6 volts (V). The control device for idling and starting the engine as described in claim 1 further includes a touch switch electrically connected to the engine control unit, and when the engine is in a flameout state, the parking stand sensor detects When the main parking stand of the locomotive is not parked and the touch switch is activated, the engine control unit outputs a signal to control the starter motor to start the engine. The engine idle speed extinguishing and starting control device according to claim 6, wherein when the engine speed reaches a threshold, the engine control unit stops outputting any signal to the starter motor to control the starter motor to stop running. .