Control method for engine starting system

A technology of engine starting and control method, which is applied in the directions of engine control, engine starting, engine starting with electric motor, etc., can solve problems such as poor control of pollutant emission, and achieve the effect of reducing emission, strong gasification ability, and clean emission

Active Publication Date: 2015-04-15
BYD CO LTD
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Problems solved by technology

[0003] In order to solve the problem that the current engine starting system has poor control over pollutant emissions, the present invention provides a control method for engine starting, which improves the control of pollutant emissions and reduces the emission of pollutants when the engine starts

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  • Control method for engine starting system

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[0016] In order to make the technical problems, technical solutions and beneficial effects solved by the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

[0017] The following is attached figure 1 First, a control method of an engine starting system according to an embodiment of the present invention will be described.

[0018] refer to figure 1 , according to the control method of the engine starting system, comprising the following steps:

[0019] Step 1: When the engine is started, the electronic control unit ECU controls the jet rail assembly to supply hydrogen fuel to the engine and start the ignition;

[0020] Step 2: After the engine is started, the ECU detects the running time of the engine in real time, and...

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Abstract

The invention provides a control method for an engine starting system. The control method includes the steps that: 1, when an engine starts, an electronic control unit controls an air jet guide rail assembly to supply hydrogen fuel to the engine and ignite to start up; 2, after then engine starts, the electronic control unit detects the operating time of the engine in real time, when it is detected that the operating time of the engine is time T, the electronic control unit control the air jet guide rail assembly to close and control an oil jet guide rail assembly to open, wherein the time T is the operating time of the engine when a three-way catalyst reaches an initiation temperature. According to the control method for the engine starting system, the hydrogen is adopted as the fuel of the starting system of the engine, so that the problem that the engine is difficult to start under the low temperature environment is solved, and meanwhile the ECU (Electronic Control Unit) switches a fuel supply system according to the operating time of the engine when the three-way catalyst reaches the initiation temperature, thus further reducing discharge of pollutant when the engine starts.

Description

technical field [0001] The invention relates to the technical field of engine system control, in particular to a control method for an engine starting system. Background technique [0002] With the rapid increase in the number of automobiles, automobile exhaust has increasingly become one of the main factors of air pollution. Now automobile engines mostly use gasoline as fuel. In order to reduce operating costs, save energy, and reduce environmental pollution from automobile exhaust, automobiles use hydrocarbon fuels. Ordinary hydrocarbon fuels (such as methanol) have a high ignition point. When the engine temperature is low in a low-temperature environment, it is difficult to ignite successfully, resulting in difficulty in starting the engine. In addition, cars have poor control over pollutant emissions during engine starting. SUMMARY OF THE INVENTION [0003] In order to solve the problem that the current engine starting system has poor control over pollutant discharge...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02N11/08
CPCF01N9/00F02D41/0027
Inventor 程明明何鹏姚伟
Owner BYD CO LTD
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