Controlling method of gasoline direct injection engine optimal ignition angular advance

A technology of ignition advance angle and gasoline direct injection, which is used in engine ignition, spark ignition controller, automatic control and other directions, and can solve the problem that the ignition advance angle is not optimal.

Active Publication Date: 2013-05-22
ZHEJIANG GEELY POWERTRAIN CO LTD +2
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  • Abstract
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Problems solved by technology

However, this invention only involves multiple dynamic adjustments of the ignition advance angle, and does not take into account various factors that affect the igniti

Method used

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  • Controlling method of gasoline direct injection engine optimal ignition angular advance

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Embodiment

[0027] Embodiment: A kind of control method of gasoline direct injection engine optimum ignition advance angle, the process that optimum ignition advance angle is obtained is: after setting base ignition advance angle, by measuring eight factors, then according to these eight factors The influence of the basic ignition advance angle is calculated and corrected in turn, and the specific process is as follows:

[0028] The first step is to set the basic ignition advance angle;

[0029] The second step is to correct the basic ignition advance angle according to the influence of the engine inlet and outlet water temperature: when the engine inlet and outlet water temperature is relatively low, the temperature in the combustion chamber is also relatively low, the oil and gas mixing is relatively poor, and the combustion rate Decrease, the knocking tendency of the engine is weak, increase the ignition advance angle at this time, when the temperature of the inlet and outlet water of ...

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Abstract

The invention discloses a controlling method of gasoline direct injection engine optimal ignition angular advance. The process of obtaining the optimal ignition angular advance is that a water inlet and outlet temperature of a motor, an air inlet temperature of a motor, air fuel ratio of a motor, altitude of an automobile, waste gas recirculation rate, variable air valve timing opening, a spraying mode and knocking controlling are logically operated after a base ignition angular advance is set. The base ignition angular advance is calculated and revised according to influences of the eight factors in sequence. The base ignition angular advance is revised through the influence of each factor, the ignition angular advance is controlled at the best time all the time no matter the motor is operated under any working condition and any environment, power performance, economy and discharging time of the motor are at the best state.

Description

technical field [0001] The invention relates to the field of engine ignition angle control, in particular to a method for controlling the optimum ignition advance angle of a gasoline direct injection engine. Background technique [0002] The ignition advance angle is a crucial control parameter for a gasoline engine. The rationality and control accuracy of the ignition advance angle setting directly affect the engine's power, economy, and emissions. Due to the actual operating conditions of the engine and the Depending on the environment (ambient temperature, humidity, altitude, etc.), the optimal ignition advance angle for the engine output is also different. Therefore, how to adjust according to the actual operating conditions of the engine, changes in the geographical environment, and some control modules of the engine body The change (such as external exhaust gas recirculation, variable valve timing control, etc.) to achieve the output control of the optimal ignition adv...

Claims

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Application Information

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IPC IPC(8): F02P5/145F02P5/152
Inventor 许杰刘义强孙建军朱允王瑞平
Owner ZHEJIANG GEELY POWERTRAIN CO LTD
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