Method of and device to control start and stop of internal combustion engine (autostart)

FIELD: automotive industry; internal combustion engines.

SUBSTANCE: invention can be used in designing, manufacturing and operating automobiles powered by internal combustion engines. Proposed method and device to control start and stop of internal combustion engine (autostart) provides easy shutting down and starting of automobile engine even at short stops without any difficulty. According to proposed method, engine is shut down by short-time switching off of ignition system provided by additional switch installed for convenient use in automobile, for instance on floor under left foot of driver to the left from clutch pedal, and starting of engine is provided by pressing on accelerator pedal.

EFFECT: reduced fuel consumption and pollution of environment by exhaust gases, especially when driving along streets.

3 cl, 1 dwg

 

The invention can be used in the design, manufacture and operation of vehicles equipped with internal combustion engines.

A known method of controlling the starting and stopping of the internal combustion engine, which is used in most modern cars (see, for example, BA3-2107, BA3-21072, BA3-21073-40i, BA3-2174: operation Manual, maintenance and repair / Suncokret - M.: Publishing House of the Third Rome", 2005).

The method consists in the fact that the engine is started driver supply voltage on-Board network of the vehicle on the starter. This happens when turning the driver of the ignition key. After running the driver releases the ignition key and thereby stops applying voltage to the starter. Stop the engine by turning the same with the ignition key. This turns off as the ignition system, and control devices. In some cases, for example in terms of movement, when there is a need for frequent switching on and switching off the engine when stopping at traffic lights and in traffic jams, this method creates certain inconveniences. When you turn off and turn on the engine the driver has to change the way the position of the wheel and, in addition, during short stops do not need to turn off control devices. For the fact in most cases, drivers do not switch off the engine during short stops. While the engine continues to run at idle, which leads to excessive fuel consumption and more pollution of the exhaust gases.

This disadvantage is eliminated by using the proposed method to start and stop the engine described in claim 1 of the claims. A short stop, the engine shuts off only the ignition system from the additional switch. This switch is located so that the management did not require the driver to change the working position of the wheel. For example, it can be installed on the floor to the left of the clutch pedal or the control knob gearbox. The inclusion of the motor is at the moment of pressing the pedal throttle (pedal "gas"). At this point, the engine starter is energized and the on-Board network. The tension is removed from the starter when the engine speed reaches a value close to the value of the idling speed. While in the process of starting movement of the vehicle is exactly the same as in the case if the engine before driving worked at idle.

The application of the method illustrates the device described in claim 2 and shown in the drawing. The device has an ignition switch 1, the PE the first output of which is connected to the positive terminal of the battery 2 and the generator. The other two output ignition switch 1 is connected to the ignition system 4 and 5 starter. In the device additionally introduced two switches (6, 7), and the electromagnetic relay 8. The switch 6 is connected to the ignition system and switch 7 to its first output connected to the positive terminal of the battery, and the second with the first output winding of an electromagnetic relay 8, the second output of which is connected to the generator. While normally open contacts of the electromagnetic relay 8 is enabled by the second output of the second switch and the starter.

Ignition switch 1, controlled by the ignition key, allows you to start the engine in the usual way. In the first position of the ignition switch 1 all the vehicle's electrical system is disabled. In the second position activates electrical equipment and control instruments, and in the third position, in which the driver switches the ignition switch 1, temporarily voltage on the starter.

Switch 6 affects the ignition system so that its activation leads to stopping of the engine. For example, the switch 6 can break the chain of supply bobbins.

When the electrical system and the engine stopped (ignition switch 1 is in the second position) of the electromagnetic relay 8 is energized, the voltage at the starter is not under the is. At the moment of pressing the pedal "gas" triggered switch 7. This forms the start circuit of the electromagnetic relay 8: the positive terminal of the battery 2, the normally open contacts of switch 7, the winding of the electromagnetic relay 8, the midpoint rectifier bridge oscillator 3, the windings and the diodes of the alternator 3, the negative terminal of battery 2. Electromagnetic relay 8 operates and its normally open contacts energizes the starter. Starts to run the engine. When reaching the engine speed value is close to the value of the idling speed, the voltage at the midpoint rectifier bridge oscillator 3 is half of the nominal value of the on-Board network. To the same value decreases the voltage on the coil of the electromagnetic relay 8, which results in electromagnetic relays 8 releases and closes the supply circuit of the starter. In this state, the device remains until the next shutdown turning off the engine.

The above device was tested on the car BA3-2107 in terms of moving around the city (Moscow). Use the device without any inconvenience allowed to turn off the engine even in the short stops. Engine startup is very fast (0,3-06) and the process of beginning a movement from a place no different from the process n the first movement with a running engine. Fuel economy averaged 1.8 l per 100 km urban thoroughfares.

1. The method of controlling start and stop of the internal combustion engine of the vehicle, namely, that the starter is served and then remove the voltage from the vehicle electrical system by turning the ignition key and the engine stop is produced when turning the ignition key in the position in which from the vehicle electrical system disables the ignition system and control devices, characterized in that the voltage at the starter is served when you depress the throttle (pedal "gas"), and shoot at the engine speed value is close to the value of the idle stop of the engine is a temporary disabling of the ignition system additional switch.

2. The control unit start and stop of the internal combustion engine of a motor vehicle comprising the battery, alternator, ignition system, starter and ignition switch, the first output of which is connected to the positive terminal of the battery and generator, and its second and third terminals are connected with the ignition system and starter, respectively, characterized in that the device comprises an electromagnetic relay and two additional switches, the first of which is connected with the sist is my ignition and the second to its first output connected to the positive terminal of the battery, and the second with the first output winding of an electromagnetic relay, a second output which is connected to the generator, while normally open contacts of the electromagnetic relay connected between the second output of the second switch and the starter.



 

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1 dwg

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