Engine ignition time control device

Abstract

The present invention relates to an engine ignition time control device. It includes the following measures: mounting air admission control valve in admission channel of engine, according to work state opening and closing the air admission control valve to regulate and control admission eddy current, using ignition time mapping data correspondent to rotating speed and load of the engine and utilizing interpolation calculation to define ignition time of the engine, according to the opening and closing of air admission control valve setting the ignition time mapping data and in first defined period after the ignition time mapping data is switched using defined lag angle to modify ignition time.

Description

technical field [0001] The present invention relates to an engine ignition timing control device having a vortex control means for adjusting the momentum of an intake vortex according to the operating state of the engine, and more particularly to an engine ignition capable of preventing engine knocking that occurs immediately after an intake control valve is driven. Time control device. Background technique [0002] In the past, for the ignition time control device of the electric motor, it has been proposed to adjust the momentum of the engine intake swirl according to the engine running state by setting the swirl control means. [0003] For such an engine ignition timing control device, for example, Japanese Patent Publication No. 7-42916 can be referred to. [0004] The above publication describes a device for setting the ignition timing according to the operating state including the operating state of the intake control valve. [0005] In addition, as another existing ...

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Problems solved by technology

[0033] However, when the ignition timing map data is switched according to the opening and closing of the intake control valve 23 as described above, for example, engine explosion may occur immediately after the intake control valve 23 is driven from the closed state to the open state. shock

[0034] That is, although the intake control valve 23 is driven from the valve closed state to the valve open state, the momentum of the intake swirl is weakened, but when paying attention to the actual intake, it will be found that there is a delay in the change of the momentum of the intake swirl. Switching the ignition timing to the advance side will cause knocking

[0035] In addition, it is also considered to pre-set the delay angle for the ignition time map data value of the intake control valve 23 corresponding to the valve opening area near the valve closing area to avoid knocking, but in the valve opening area corresponding to the valve closing area When the normal operation is performed in the operating area, it will lead to the deterioration of the engine performance, or it may make the intake control valve 23 unable to flexibly set the opening and closing area.

[0036] As mentioned above, the existing engine ignition timing control device switches the ignition timing map data corresponding to the opening and closing of the intake control valve 23, so there is a lag period in the momentum change of the intake swirl, so there is a problem that the ignition When the time is switched to the advance side, knocking will occur immediately after the intake control valve 23 is driven from the closed state to the open state

[0037] In addition, even if the delay angle is set for the ignition timing map data value of the intake control valve 23 corresponding to the valve opening area near the valve closing area in order to avoid knocking, it will lead to deterioration of engine performance during normal operation and cannot be flexibly The opening and closing area of ​​the intake control valve 23 is set, and as a result, there is a problem that it cannot be practically applied

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