Starting method for reversed positioning and pressure reduction of engine

An engine and reverse technology, applied in the direction of engine components, engine control, machine/engine, etc., can solve the problems of small engine compression resistance, large engine compression resistance, excessive reverse angle, etc., to increase engine speed and reduce startup Resistance, prolonging the working time effect

Active Publication Date: 2016-07-20
CHONGQING LIHUA AUTOMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] 2) The engine compression resistance is too small so that the reverse angle does not enter the starting end of the decompression mechanism;
[0006] 3) Excessive compression resistance of the engine causes the reverse angle to exceed the end end of the decompression mechanism

Method used

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  • Starting method for reversed positioning and pressure reduction of engine
  • Starting method for reversed positioning and pressure reduction of engine
  • Starting method for reversed positioning and pressure reduction of engine

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Embodiment Construction

[0033] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Such as figure 1 , figure 2 , Figure 5 , Image 6 As shown, a method for reverse start of an engine according to the present invention includes the following steps:

[0035] 1) Before starting, control the motor to rotate forward to make the crankshaft rotate to the compression stroke;

[0036] 2) After the crankshaft rotates forward to the compression stroke, control the starter motor to reverse to make the crank enter the decompression zone;

[0037] 3) After the crank enters the decompression zone, the motor is controlled to rotate forward with a large torque.

[0038] This embodiment is controlled in response to the engine start operation. When the engine is started for the first time, or when another abnormality occurs and the engine is not in a decompressed state, the starting method can be used. The starting method is to reverse th...

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PUM

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Abstract

The invention discloses a starting method for reversed positioning and pressure reduction of an engine. The starting method comprises the steps that firstly, a motor is driven through a control mechanism to rotate forwards, and the engine is made to rotate forwards to a restoration point of a pressure reduction mechanism; and secondly, the motor is driven by the control mechanism to rotate reversely, reversed positioning is conducted on the engine, and the pressure reduction mechanism of the engine is made to enter the position between the pressure reduction state starting point and a pressure reduction state ending point. By the adoption of the starting method for reversed positioning and pressure reduction of the engine, the engine can be made in the pressure reduction state before being started, and the starting load of the engine is reduced, so that a response can be given to the starting operation rapidly to make a vehicle be started, and the starting performance is improved.

Description

Technical field [0001] The invention belongs to the technical field of engine starting, and particularly relates to a starting method for reverse positioning and decompression of an engine. Background technique [0002] In the prior art, a decompression mechanism of a reverse rotation mechanism is used when the motorcycle is started. The function of the decompression mechanism is to reduce the rotation resistance of the crankshaft at the next start. The crankshaft is still there after the ignition is turned off. Running by inertia, due to the resistance of the compression stroke, the piston stops before reaching the compression top dead center and moves down to reverse the crankshaft. As soon as the crankshaft reverses, the pressure reducing mechanism starts to work and lifts a valve, and the valve opens the cylinder. There is no pressure inside, and the engine reduces the compression resistance when the motor is started next time to make it easier to start. As long as the cranks...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02D17/04F01L13/08
CPCF01L13/08F02D17/04
Inventor 何林严仕涛郭成美刘小勇
Owner CHONGQING LIHUA AUTOMATION TECH CO LTD
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