Adjustment method for angle of ignition advance of engine
An ignition advance angle and engine technology, applied in automatic control, automatic control, electrical automatic control, etc., can solve the problems of difficult adjustment of ignition advance angle, no engine equipped with electronic control unit, etc.
Active Publication Date: 2013-07-10
山东速力动力科技有限公司
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Problems solved by technology
The biogas and gasoline dual-purpose engine disclosed in this document only adjusts the ignition advance angle when the fuel is changed. The adjustment amount of the ignition advance angle for different components of biogas is fixed, and it is difficult to adjust the ignition advance angle for different biogas.
[0006] In addition, there is no technical content in the prior art to equip an electronic control unit (ECU) for biogas (or natural gas) and gasoline dual-purpose engines
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[0024] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings, but they do not constitute a limitation of the present invention, and are only used as examples. At the same time, the advantages of the present invention will become clearer and easier to understand.
[0025] The biogas (or natural gas) / gasoline dual-purpose engine adopted in the present invention has a cylinder block, a gasoline supply unit, a biogas (or natural gas) supply unit and an ECU electronic control unit. Such as figure 1 As shown, the gasoline supply unit includes a fuel tank, oil pump, oil pipeline and injector; the biogas (or natural gas) supply unit includes a biogas (or natural gas) storage chamber, an electronically controlled pressure regulator, an air filter, a mixer, and an electronic throttle.
[0026] The engine electronic control unit ECU is the core of the whole system. It collects the analog signal or digital signal trans...
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An adjustment method for an angle of ignition advance of a marsh gas (or natural gas) / gasoline dual purpose engine with an ECU (electronic control unit) comprises the steps of: (1) a setting step: setting the type of supply fuel to be the gasoline or the marsh gas (or the natural gas) with a methane content of respectively 50 percents, 60 percents or 70 percents in a setting unit of the ECU; (2) a distributing step of angles of starting ignition advance: under starting condition, respectively distributing different angles of starting ignition advance according to fuel type set in the set steps; (3) a searching step: during normal running, the ECU searches the best angle of ignition advance value in a data sheet stored in the RAM (Random Access Memory) according to the set fuel type and values of an intake air pressure sensor, an intake air temperature sensor and a speed sensor; and (4) a computing step: the ECU computes according to the following formula to obtain a delayed duration according to the data of angle of ignition advance acquired in the searching step.
Description
technical field [0001] The invention relates to a biogas (or natural gas) / gasoline dual-purpose engine, in particular to a method for adjusting the ignition advance angle of the biogas (or natural gas) / gasoline dual-purpose engine, which belongs to the field of engines. Background technique [0002] Biogas (or natural gas) has been paid more and more attention to as a clean energy source, and the biogas (or natural gas) engine developed by using it as the fuel of the engine is very popular. However, unlike gasoline engines with sufficient gasoline supply, the supply of biogas (or natural gas) is often difficult to guarantee. When the supply of biogas (or natural gas) is insufficient, people expect gasoline to be used as fuel. Therefore, People begin to study gasoline, biogas (or natural gas) dual-purpose engine. At present, many experts, scholars and technicians have explored gasoline engines converted to biogas (or natural gas) and gasoline dual-purpose engines. [0003] ...
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IPC IPC(8): F02P5/145
Inventor 朱洪春殷爱军陈光亮曹政坤侯跃艳程晶晶鲁晓燕
Owner 山东速力动力科技有限公司