Electric control ignition energy control method for automobile engine

A vehicle engine and ignition energy technology, applied in the direction of automatic control, automatic control, combustion engine, etc., can solve the problems of rising fuel consumption, shortening the life of the ignition system, decreasing power and torque, etc., so as to reduce energy waste and solve starting difficulties , reduce the effect of excessive ablation

Inactive Publication Date: 2009-08-05
BEIJING UNIV OF TECH
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Problems solved by technology

If the ignition energy is too low, the combustion condition of the engine will deteriorate, the power and torque will decrease, the fuel consumption will increase, the emission will deteriorate, and the starting performance will deteriorate; Knocking reduces engine power and damages parts

Method used

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  • Electric control ignition energy control method for automobile engine
  • Electric control ignition energy control method for automobile engine

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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] The speed signal is obtained by the crankshaft phase signal sensor and input to the control unit that controls the ignition as a reference signal for ignition control.

[0015] In this system, the ignition signal from the ignition control unit drives the power transistor to control the on-off of the primary circuit of the ignition coil, so that the secondary induces high voltage, and the four cylinders are ignited sequentially through the fire distribution function of the distributor. Since the electronic control ignition system cancels the mechanical contact and uses a non-contact transistor switch, the distributor only plays the role of distributing the fire, thus avoiding the contact vibration at high speed and the energy lost by discharging at low speed, and improving the secondary voltage ignition The signal controls the on-off of the primary circuit of the igni...

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Abstract

The invention relates to an ignition energy control method for an engine ignition system of a vehicle, which belongs to the field of the control of an internal combustion engine. Because a natural gas engine needs high energy to ignite a combustion mixture inside a combustion chamber, the ignition energy control method adopts a time-sequential repeated ignition tactic under the condition of low rotating speed to control ignition energy by controlling ignition times, time slots among the repeated ignitions and the closing time of a primary ignition coil, thereby effectively solving the problem of the difficult startup of an engine and preventing the engine body remodeling caused by multiple spark plugs. In addition, the invention can alleviate the overmuch ablation of the electrodes of the spark plugs because of the repeated ignitions and can also reduce the waste of energy.

Description

technical field [0001] The invention relates to an ignition energy control method, which is applied to an electronically controlled ignition system of a vehicle natural gas engine to ensure ignition of combustible mixture in a combustion chamber under various working conditions. It belongs to the field of alternative fuels for internal combustion engines. Background technique [0002] The working principle of the electronically controlled ignition system: the control system first samples the speed signal and the load signal, and these signals are sent to the calculation unit, and use the interpolation method to check the ignition MAP stored in the memory of the control unit according to the speed and load, and find the best The control system collects other engine operating parameter signals at the same time, and finds out the correction value of the ignition advance angle according to these signals, and converts the best ignition advance angle into the corresponding ignitio...

Claims

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Application Information

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IPC IPC(8): F02P5/15
CPCY02T10/46Y02T10/40
Inventor 张红光王道静刘凯郑国勇
Owner BEIJING UNIV OF TECH
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