CN1892002B

CN1892002B - Fuel injection engine sprak plug pollution-proof control method

Info

Publication number: CN1892002B
Application number: CN200510083544XA
Authority: CN
Inventors: 张森宪
Original assignee: Kwang Yang Motor Co Ltd
Current assignee: Kwang Yang Motor Co Ltd
Priority date: 2005-07-08
Filing date: 2005-07-08
Publication date: 2010-06-16
Anticipated expiration: 2025-07-08
Also published as: CN1892002A

Abstract

The invention discloses a fuel oil jet engine spark plug antifouling control method, and mainly at first activation, it synchronously jets fuel oil by electronic control unit into the engine, makes the fuel oil able to be ignited and then able to make the engine activated, and here, synchronously detects engine speed: if the engine speed is not higher than the set activation speed but the engine is activated again, the electronic control unit controls to temporarily stop jetting fuel oil into the engine but it uses the spark plug to ignite the fuel oil having stayed in the engine until the engine activation succeeds, and then it uses the electronic control unit to automatically and continuously jet the fuel oil into the engine to sustain operation of the engine, thus making the engine activation easier.

Description

Fuel injection engine sprak plug pollution-proof control method

Technical field

The present invention relates to a kind of controlling method that reduces pollution, particularly relate to a kind of controlling method that reduces the pollution that produces when motor vehicle activate.

Background technique

Adopt at present engine to drive the motor vehicle of advancing, locomotive etc. for example when it activates engine start running, as shown in Figure 1, is operated one by the driver and is activated part and carry out process 11, provides electric energy to activating motor by the storage battery of motor vehicle, makes and activates the motor start.

Then, carry out process 12 immediately, drive the engine entry into service by activating motor; At this moment, almost synchronously carry out process 13 and process 14, control injected fuel to engine, and ignite spray by spark plug and go into the fuel oil that nebulizes in the engine, so that engine is activated and begins continuous running by electronic control unit (ECU).

After engine surpasses a scheduled time with the desired speed running, being defined as engine activates successfully, the driver can optionally control electronic control unit (ECU) and control the amount of fuel of spurting in the engine, with the rotating speed of raising engine running, and then motor vehicle is advanced with predetermined speed.

And when engine can't surpass these scheduled times with desired speed running, promptly be defined as engine and un-activation, at this moment, the driver must actuator-activated once more, repeats process 11 to process 14, is activated and can the idling continuous running up to engine.

Usually, when the driver activates engine with said process, if can activate engine smoothly for the first time, make engine keep idling continuous running start, one comes the driver can't be because of activating the not smooth of engine process, and queries the design and the quality bills of materials of locomotive, two exhausted air quantity that is produced in activation and exhaust gas concentrations, in the controlled range that is designed, therefore can not produce the air pollution problems inherent of relevant environmental protection.

But, in fact motor vehicle winter because of under the clammy or rainy season weather, the spark plug of action of lighting a fire in engine is moist easily, usually the driver also can't can activate engine for the first time smoothly, and the process that must repeat above-mentioned activation engine for several times, could activate engine smoothly makes it with the idling continuous running, and in the process of reconditioning engine again and again, because when activating engine at every turn, electronic control unit all can spray vaporific fuel oil to engine, thereby makes spark plug be difficult to ignite fuel oil more because of the moisture of fuel oil adheres to, and also activates with regard to the more difficult engine that allows certainly, simultaneously, engine intermediate fuel oil concentration is too high, when also causing spark plug to ignite fuel oil, because of incomplete combustion produces more hydroxide (HO), cause the significantly rising of combustion gas concentration, and cause the serious environmental pollution problem.

Therefore, how improving the process that motor vehicle activate engine, make the driver can more easily activate engine, and reduce the pollution problem that is caused in the process of reconditioning engine, is one of people's direction of making great efforts to improve.

Summary of the invention

Therefore, the object of the present invention is to provide a kind of fuel injection engine sprak plug pollution-proof control method, activate the success rate of engine once more, and reduce reconditioning engine time institute exhaust gas discharged concentration with raising.

So fuel injection engine sprak plug pollution-proof control method of the present invention comprises following steps:

(a) for the first time supply of electrical energy to activates motor, makes this activations motor start driving an engine running, and an electronic control unit controls injected fuel makes the fuel oil can be by spark plug ignition to this engine simultaneously, and then this engine can be activated.

(b) detect the rotating speed of this engine in the step (a) synchronously.

(c) when being not more than one, this engine speed activates rotating speed, and supply of electrical energy to this activation motor makes this activation motor start when driving this engine running once more, this electronic control unit controls stops injected fuel to this engine, and ignite in this step (a) institute's spray and the fuel oil in this engine of being detained, and then this engine can be activated with this spark plug.

(d) after this engine is activated success, this electronic control unit is complied with control sustained firing fuel oil to this engine, and makes this engine continuous running start.

Description of drawings

Fig. 1 is a flow chart, and the process that activates motor vehicle engine in the prior art is described; And

Fig. 2 is a flow chart, and a preferred embodiment of fuel injection engine sprak plug pollution-proof control method of the present invention is described.

Embodiment

About aforementioned and other technology contents, characteristics and effect of the present invention, in the detailed description of a following cooperation preferred embodiment with reference to the accompanying drawings, can clearly present.

Before the present invention is described in detail, be noted that in the following description content similarly assembly is to represent with identical numbering.

Consult Fig. 2, a preferred embodiment of fuel injection engine sprak plug pollution-proof control method of the present invention can improve the success rate that the driver activates engine, and waste gas produced concentration in the process of reduction reconditioning engine.

At first, it is similar to activate engine for the first time as motor vehicle, activates part by driver's implementation step 21 operation one,, is made and activates the motor start to activating motor by the storage battery supply of electrical energy of motor vehicle.

Then, carry out step 22 immediately, activate motor and drive the engine entry into service; At this moment, carry out step 23 synchronously, detect the rotating speed of engine this moment and the time length of running.

And simultaneously, step 24, step 25 also are almost synchronously to be performed, and control injected fuel to engine by electronic control unit (ECU) earlier, go into the fuel oil that nebulizes in the engine and ignite spray by spark plug, so that engine is activated and begins continuous running.

When engine with idling speed (be not less than usually activate rotating speed) continuous running for example after one minute, promptly being defined as the engine shown in the step 26 activates successfully, electronic control unit can be according to driver's control, the amount of fuel in the engine is spurted in control, with the rotating speed of raising engine running, and then motor vehicle are advanced with predetermined speed.

And be not more than the activation rotating speed when engine speed, and promptly/or continuous running when surpassing the scheduled time, promptly be defined as engine and un-activation, and carry out step 27 immediately, be controlled by an electronic control unit and stop injected fuel to engine.

And simultaneously, as actuator-activated once more of driver, repeat step 21 to step 23 with supply of electrical energy once more to activating motor, after making the start of activation motor drive engine running, and carry out step 28, postpone a scheduled time injected fuel to engine with electronic control unit controls, make and proceed step 24,25, ignite when activating engine for the first time with spark plug, institute's spray and the fuel oil in engine of being detained, too much to avoid spray to go into the fuel oil of engine, make that spark plug is too moist and more difficult activation causes the concentration of combustion gas to raise when avoiding spark plug to ignite fuel oil simultaneously, and repeat these steps, successfully activate engine up to the driver, engine is kept with the idling continuous running.

Fuel injection engine sprak plug pollution-proof control method of the present invention, mainly be to utilize electronic control unit (ECU) injected fuel can preset the time of injected fuel to engine, and the characteristics of spurting into the amount of fuel of engine, and when normal the activation for the first time, synchronously by the electronic control unit injected fuel to engine, ignite and make engine begin continuous running for spark plug, and in the synchronous engine speed that detects this moment, and/or endurance period, and when engine is above with desired speed continuous running certain hour, then be defined as and activate successfully, control electronic control unit controls by the driver and spurt into amount of fuel in the engine and change, and then the rotating speed that can improve engine running makes motor vehicle advance with predetermined speed; And fail with desired speed continuous running certain hour when above when engine, then be defined as and activate failure, at this moment, when the driver activates engine once more, electronic control unit controls temporarily stops injected fuel to engine, and ignites spray and the fuel oil in engine of being detained by plug ignition, after engine is successfully activated, continue again to comply with the automatic continuous injected fuel of control to engine, keep the lasting running of engine by electronic control unit.

As shown in the above description, fuel injection engine sprak plug pollution-proof control method of the present invention really can a succession of accurate detection engine condition, cooperate the electronic control unit controls spray to live the amount and the time of fuel oil, improve in the process of existing activation engine, all can spray go into the fuel oil of prearranging quatity in engine during each the activation, and make that the amount of fuel of being detained in engine is too much, thereby cause spark plug too moist and more be difficult to activate, and spark plug is when igniting the fuel oil of excessive concentration and Air mixing gas, produce the problem of the hydroxide of a large amount of high concentrations, and the success rate that makes the driver activate engine once more significantly improves, and avoid simultaneously because of fuel oil concentration to be ignited in the engine too high, produce too much hydroxide because of incomplete combustion and cause when igniting, cause the serious environmental pollution problem of combustion gas excessive concentration, reach the purpose of the present invention's creation really.

More than explanation only is preferred embodiment of the present invention, should not limit scope of the present invention with this, and the variation and the modification of the simple equivalent that the present patent application claim and description are done all belong in the scope that patent of the present invention contains.

Claims

1. fuel injection engine sprak plug pollution-proof control method comprises:

(a) for the first time supply of electrical energy to activates motor, makes this activations motor start, and driving an engine running, and an electronic control unit controls injected fuel makes the fuel oil can be by spark plug ignition to this engine simultaneously, and then this engine can be activated;

(b) detect the rotating speed of this engine in the step (a) synchronously;

(c) when being not more than one, this engine speed activates rotating speed, and supply of electrical energy to this activation motor makes this activation motor start when driving this engine running once more, this electronic control unit controls stops injected fuel to this engine, and ignite in this step (a) institute's spray and the fuel oil in this engine of being detained, and then this engine is activated with this spark plug; And

(d) after this engine is activated success, this electronic control unit controls sustained firing fuel oil and makes this engine continuous running start to this engine.

2. fuel injection engine sprak plug pollution-proof control method according to claim 1 also comprises a step (e), is carrying out this step (a) afterwards, repeats this step (b) and step (c), is activated up to this engine.