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valve train drive

A valve mechanism and driving device technology, applied in valve driving device, valve device, machine/engine, etc., can solve the problems of low thermal efficiency, large pumping loss, poor fuel economy, etc.

Active Publication Date: 2022-04-22
SAIC MOTOR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the embodiment of the present invention provides a valve mechanism driving device to overcome the large pumping loss caused by adjusting the throttle opening and valve timing to meet the different loads of the engine in the prior art, Low thermal efficiency and poor fuel economy

Method used

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Embodiment 2

[0092] Figure 8a to Figure 8dA schematic structural diagram of a bracket adjuster is provided for the embodiment of the present application. like Figure 8a As shown, the bracket adjuster 6 provided in this embodiment may include a housing 63, a baffle 61, a push rod 62, and a push rod control mechanism (not shown).

[0093] The baffle 61 is covered on the bottom of the housing, and the baffle 61 is provided with a first connection hole 611 through which the push rod 62 passes. One end of the push rod 62 outside the housing is fixedly connected to the connector bracket 5 , and one end of the push rod 62 inside the housing is connected to the push rod control mechanism. The push rod control mechanism controls the push rod 62 to move along the axial direction of the push rod 62 .

[0094] In this embodiment, the push rod control mechanism controls the push rod to move along the axial direction of the push rod, and the push rod drives the connector bracket to move along the a...

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PUM

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Abstract

An embodiment of the present application provides a valve mechanism driving device, including: a mandrel, a cam sleeve, a connector, a connector bracket and a bracket adjuster, the bracket adjuster is fixedly connected to the connector bracket, and the connector is inside the connector bracket In addition, the bracket adjuster can adjust the position of the connector by adjusting the position of the connector bracket in clearance fit with the joint bracket, so that the axis of the connector is offset relative to the axis of the mandrel. In the case where the axis center of the connector is offset from the axis center of the mandrel, the rotation center of the connector transmitting the rotational torque deviates from the rotation center of the cam sleeve and the mandrel, so that the rotational speeds of the cam sleeve and the mandrel are inconsistent, And then cause there is a rotation angle difference between the cam sleeve and the mandrel. When the valve opening process coincides with different rotation angle difference stages, the function of increasing or decreasing the valve opening wrap angle relative to the theoretical curve wrap angle can be realized.

Description

technical field [0001] The embodiments of the present application relate to the technical field of engines, and in particular to a valve mechanism driving device. Background technique [0002] The valve is an important part in the engine, which is used to supply fresh air to the engine and discharge the exhaust gas of combustion. The valve driving mechanism of the engine is used to ensure that the engine opens and closes the valve at the correct time point to realize the process of intake, combustion and exhaust of the engine. [0003] Under different working conditions such as low load, partial load and full load, the engine has different demands on the amount of intake air. Usually, the traditional valve driving mechanism controls the opening and closing of the valve according to the fixed lift and opening angle, and then realizes the control of the intake air volume by adjusting the throttle opening and valve timing, which causes the engine to The mid-pump gas loss is l...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/04F01L13/00
CPCF01L1/04F01L13/00
Inventor 熊敏李伟军
Owner SAIC MOTOR