Method for quickly starting and stopping engine of hybrid electric vehicle and control circuit thereof

A hybrid electric vehicle and control circuit technology, applied in engine control, machine/engine, electrical control, etc., can solve problems such as poor emission, high fuel consumption, slow start, etc., to achieve optimized starting emission, fast start, and reduced fuel consumption Effect

Inactive Publication Date: 2011-03-30
BEIJING AUTOMOBILE RES GENERAL INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the problems of slow starting of existing engines, high fuel consumption and poor emissions, an object of the present invention is to provide a method for quick start and stop of an engine, which can optimize engine starting emissions and improve fuel consumption

Method used

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  • Method for quickly starting and stopping engine of hybrid electric vehicle and control circuit thereof
  • Method for quickly starting and stopping engine of hybrid electric vehicle and control circuit thereof
  • Method for quickly starting and stopping engine of hybrid electric vehicle and control circuit thereof

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Embodiment Construction

[0017] The specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.

[0018] The structural representation of the engine quick start-stop device of the present invention is as figure 1 . In the figure, two crankshaft position sensors B and G are installed at the crankshaft flywheel C of engine A. Crankshaft sensors B and G are set at symmetrical positions on the crankshaft teeth, such as figure 2 shown.

[0019] The crankshaft position sensors B and G connected by wires, the position sensor H of the motor drive chainring D and the electric control unit F constitute the control circuit of the present invention. The motor transmission chainring D and the starter E are connected by gear meshing, and are connected axially with the flywheel C of the crankshaft.

[0020] When the engine is stopped, the electronic control unit F receives the synchronous position signals from the crankshaft position sen...

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Abstract

The invention relates to a method for quickly starting and stopping an engine of a hybrid electric vehicle and a control circuit thereof. Two crankshaft position sensors are assembled on a flywheel disk of the engine; and a position sensor is also assembled on a motor transmission gear disk. The engine can be stopped on a cylinder top dead center through the control of an electric control unit; and oil spraying and ignition treatment are directly performed on the cylinder top dead center when the engine is restarted. The method saves a crankshaft synchronization judgment process required when the engine is started and pre-spraying treatment in the synchronization judgment process. Thus, the method has the advantages that the engine is quickly started, starting and discharging is optimized, fuel consumption is reduced and the like.

Description

technical field [0001] The invention relates to a technology for quick start and stop of a hybrid vehicle engine, and more particularly relates to a method for quick start and stop of a hybrid vehicle engine and a control circuit thereof. Background technique [0002] In the existing control technology field, when the engine needs to be restarted after shutdown, the engine electronic control unit first needs to perform the crankshaft synchronization judgment process, which takes about 200ms-300ms and affects the starting speed of the engine. At the same time, after the crankshaft synchronization judgment of the engine is completed, the pre-injection treatment under the starting condition will be carried out to pre-inject fuel into the cylinder. This part of the pre-injection will also significantly affect the emission of the engine starting condition, which will increase the fuel consumption of the engine and reduce worse. Contents of the invention [0003] In order to ov...

Claims

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Application Information

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IPC IPC(8): F02D43/00
Inventor 詹文章林逸尹颖施绍有周罕华魏跃远
Owner BEIJING AUTOMOBILE RES GENERAL INST
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