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Compression release type brake for engine and braking method thereof

An engine and brake technology, which is applied in engine control, engine components, machine/engine, etc., can solve the problems of engine braking power and exhaust valve opening that are not stable, and achieve stable braking power, less oil leakage, and exhaust The effect of stabilizing the valve opening

Active Publication Date: 2013-10-02
深圳市大为创新科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings are: the braking power of the engine and the opening of the exhaust valve are not very stable

Method used

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  • Compression release type brake for engine and braking method thereof
  • Compression release type brake for engine and braking method thereof

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Experimental program
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Effect test

Embodiment Construction

[0040] The present invention will be described in further detail below in conjunction with accompanying drawing:

[0041] see figure 1 As shown, the engine compression release brake includes a housing 1, and the solenoid valve 2, check valve 3 and auxiliary piston 72 are sequentially arranged in the housing 1 through the oil passage, and the housing 1 corresponding to the solenoid valve 2 is provided with The oil inlet 11 and the oil outlet 25, the housing 1 is also provided with an oil passage 83 through which the auxiliary piston 72 communicates with the main piston 71, and the main piston chamber and the auxiliary piston chamber communicated through the oil passage 83 form the working position of the piston 7. Cavity 85; located at the lower end of the main piston 71 outside the housing 1, a rocker arm 92 is isolated from it;

[0042]The solenoid valve 2 consists of a valve body 21, a spool 22 set in the inner cavity of the valve body 21, a mandrel 221 with a reduced diame...

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Abstract

The invention relates to a compression release type brake for an engine and a braking method thereof. The brake comprises a solenoid valve, a non-return valve and an auxiliary piston which are sequentially arranged on a housing through an oil passage, wherein an oil intake piston is arranged between the non-return valve and the housing; an oil discharge control valve is arranged at the bottom of the oil intake piston; the bottom of the oil discharge control valve is encapsulated by a spring seat. The braking method comprises the following steps: (1), during braking, the solenoid valve is powered on, an oil intake passage is opened, an oil discharge passage is cut off, engine oil pass through the oil intake passage to press the oil discharge control valve downwards, opens the non-return valve to enter a working cavity and then drives the auxiliary piston and a main piston to move downwards; (2) when one cylinder of the engine is at the end of compression stroke, exhaust valves or intake valves of other cylinders are in the open state, corresponding to the valves, the main piston is jacked up by a rocker, and under the action of the pushing force of the engine oil, the auxiliary piston moves down to open the exhaust valves so as to achieve compression release type braking.

Description

technical field [0001] The invention relates to an engine brake, in particular to an engine compression release brake and a braking method thereof. Background technique [0002] CN201110378295.2 discloses an engine brake, the purpose of which is to provide an engine brake with long service life, good braking effect, and can effectively improve the driving safety of the vehicle. The technical solution: The engine brake includes a housing (1), an electromagnetic valve, a check valve and a piston assembly sequentially arranged on the housing (1), and the housing (1) is also provided with an electromagnetic Oil passage one (11) connected to the valve oil inlet (55), oil passage two (12) connecting the solenoid valve oil outlet (56) to the oil inlet of the check valve and one end connected to the oil outlet of the check valve Oil passage three (13), the housing (1) is provided with a concave cavity, the other end of the oil passage three (13) communicates with the concave cavity...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L13/06F01L9/02F02D13/04F01L9/10
Inventor 黄斌练双玲唐飞林永安李伟民
Owner 深圳市大为创新科技股份有限公司
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