Method and system for ignition coil simulation load parameter setting and ignition current adjusting
A technology of ignition coil and simulated load, applied in engine ignition, forward/reverse ignition, spark ignition controller, etc., can solve the problems of large thermal stress of switching devices, affecting the accuracy of test results, etc., and achieve the effect of accurate thermal stress
Active Publication Date: 2017-12-22
CHINA FIRST AUTOMOBILE
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Problems solved by technology
[0008] In view of the above technical problems, the embodiments of the present invention provide a method and system for setting ignition coil simulated load parameters and adjusting ignition current, which is used to solve the problem of driving the switching device of the ignition coil when the ignition coil simulated load is used instead of the real load for environmental tests. The thermal stress is too large, which affects the technical problems of the accuracy of the test results
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[0022] In order to make the technical problems, technical solutions and advantages to be solved by the present invention clearer, the following will describe in detail with reference to the drawings and specific embodiments.
[0023] First, the ignition coil simulation load and the ignition coil used in the embodiment of the present invention are introduced.
[0024] like figure 2 As shown, the ignition coil simulation load of the present invention is composed of resistors and inductors. During the engine control unit environmental test, the engine control unit is connected to the load interface of the ignition coil simulation load, and the ignition coil simulation load is used to replace the real load for environmental testing. , the equivalent resistance of the simulated load of the ignition coil is equal to the equivalent resistance of the primary coil terminal of the real load of the ignition coil; the equivalent inductance of the simulated load of the ignition coil is eq...
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The invention provides a method for ignition coil simulation load parameter setting and ignition current adjusting. The method for ignition coil simulation load parameter setting and ignition current adjusting comprises the steps that the parameters of an ignition coil simulation load are set; the loss, generated when an ignition circuit drives an ignition coil actual load in an ignition period, of a switch device is determined; based on a preset relationship, the loss, generated when the ignition circuit drives the ignition coil simulation load in an ignition period, of the switch device is determined; the loss, generated when the ignition coil actual load is driven, of the switch device and the loss, generated when the ignition coil simulation load is driven, of the switch device are made equal, and based on the equal relationship and the preset relationship, the charging time of the ignition coil simulation load is determined; and based on the determined charging time of the ignition coil simulation load, the set value of the ignition current of the ignition circuit is adjusted. The method for ignition coil simulation load parameter setting and ignition current adjusting can solve the problem that since the thermal stress, generated when the ignition coil is driven, of the switch device is excessively large, the accuracy of a test result is influenced.
Description
technical field [0001] The invention relates to the technical field of engine electronic control unit testing, in particular to a method and system for setting simulated load parameters of an engine ignition coil and adjusting ignition current. Background technique [0002] At present, when the engine electronic control unit is doing the environmental test (life test), the simulated load is used instead of the real load for the environmental test, which not only reduces the cost of the test, but also solves the problem that the real load is easily damaged during the long-term test and affects the progress of the test. . The method of using simulated loads instead of real loads for environmental tests is very suitable for loads such as relays, lamps, and fans, but for loads such as ignition coils that cannot be simply combined with resistance and inductance, there are excessive thermal stresses in the switching devices that drive the ignition coils. The specific performance ...
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Login to View More IPC IPC(8): F02P3/05F02P5/155F02P17/00
CPCF02P3/05F02P5/155F02P17/00
Inventor 隋建鹏宋红雨刘鹏飞孙鹏张金鹏王兴武
Owner CHINA FIRST AUTOMOBILE