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Motor speed slower

An engine and retarder technology, applied in the directions of engine components, engine control, machine/engine, etc., can solve the problems of accelerated seating instead of buffer seating, not control methods, etc., to achieve the effect of simplified structure and simplified structure

Inactive Publication Date: 2007-05-30
马银良
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The seat of the exhaust valve controlled by the structure engine retarder in Figure 2 is controlled by the descending acceleration line segment of the fuel injector drive cam, which causes the exhaust valve to accelerate the seat instead of cushioning the seat, although it can be achieved by reducing the exhaust valve The seating stroke of the valve is used to control the seating speed of the exhaust valve to avoid impact damage. After all, this is not an ideal control method

Method used

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  • Motor speed slower
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Embodiment Construction

[0030] best practice

[0031] The present invention will be further described below in combination with specific embodiments.

[0032] As shown in Figures 3, 4, 5, and 6, an engine retarder is directly installed on an internal combustion engine, including an active piston 82, a first one-way valve 62, a second one-way valve 58, and a driven piston. 20. Oil drain valve 26, solenoid valve 70, etc.

[0033] The housing 50 is mounted on the cylinder head 2, and the housing 50 is equipped with parts required to complete the braking function. The lubricating system of the engine supplies lubricating oil to a solenoid valve 70 through an oil passage 72 . Oil passage 74 communicates solenoid valve 70 with engine lubricating oil sump (not shown). The oil passage 76 communicates with the solenoid valve 70 . When the solenoid valve 70 is energized, the low-pressure lubricating oil flows through the oil passage 72 , the solenoid valve 70 and enters the oil passage 76 . When the solen...

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Abstract

The device includes active piston, relay piston, solenoid valve, oil relief valve, two non-return valves and an oil drain hole leading to lubricating oil bath of engine, making working medium in hydraulic pipe line flows in one direction. In each working cycle, most quantity of working medium is discharged, and new working medium is obtained again so as to remove air in pipe rapidly. Moreover, in braking state, exhaust valve is controlled by damping shaped line segment on exhaust cam of engine. The invention cancels control valve so as to simplify structure.

Description

technical field [0001] The invention relates to a hydraulic device for changing the movement of an exhaust valve of an internal combustion engine, in particular to an engine retarder. Background technique [0002] The retarder is an auxiliary braking device for modern vehicles (especially heavy-duty trucks and large passenger cars), which can enhance the braking performance of the vehicle and slow down the vehicle without using the main brake (traditional friction braking system) Driving speed, preventing vehicle brake failure, ensuring driving safety, especially enhancing the safety of vehicles when descending a slope with heavy loads. Installing a retarder on a vehicle can shorten the replacement cycle of brake friction linings, reduce the number of brake repairs, reduce maintenance costs, reduce vehicle damage, improve driving safety and comfort, reduce driver fatigue, and improve work efficiency , Reduce sudden braking and make driving smoother. At present, the retarde...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D9/06F01L13/06
Inventor 马银良
Owner 马银良