Variable length connecting rod mechanism of variable compression ratio engine and control method of variable length connecting rod mechanism

A connecting rod mechanism and engine technology, applied in engine control, machine/engine, connecting rod, etc., can solve the problems of large engine changes, poor reliability, and poor manufacturability

Pending Publication Date: 2019-03-22
无锡雅佳德音科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Some schemes have great changes to the original engine, which is not conducive to engine upgrading; some schemes are more complic

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  • Variable length connecting rod mechanism of variable compression ratio engine and control method of variable length connecting rod mechanism
  • Variable length connecting rod mechanism of variable compression ratio engine and control method of variable length connecting rod mechanism
  • Variable length connecting rod mechanism of variable compression ratio engine and control method of variable length connecting rod mechanism

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Embodiment Construction

[0039] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040]In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", " The orientations or positional relationships indicated by "vertical", "horizontal", "top", "bottom", "inner" and "outer" are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and Simplified descriptions, rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood a...

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Abstract

The invention provides a variable length connecting rod mechanism of a variable compression ratio engine. The variable length connecting rod mechanism includes a connecting rod body, an eccentric ring, an eccentric ring support, a connecting support and a hydraulic plunger, the middle of the connecting rod body is provided with a plunger hole, the hydraulic plunger is arranged in the plunger hole,the eccentric ring is connected with the eccentric ring support, the connecting support is hinged between the edge of the eccentric ring support and the hydraulic plunger, and rotation of the eccentric ring drives vertical movement of the hydraulic plunger through the connecting support. The invention further provides a control method of the variable connecting rod mechanism. The length of a connecting rod can be changed by hydraulic control to adjust the compression ratio of the engine; hydraulic cavities are formed in the center of a connecting rod body, and the processing technology capability is good; the two hydraulic cavities share the hydraulic plunger, processing is simple, and sealing is easy to guarantee; the volume of the hydraulic cavities is large, and leakage has little effect on the compression ratio; and the movement joints of the mechanism are all hinged through cylindrical pins, the bearing strength is uniform, and reliability is good.

Description

technical field [0001] The invention relates to the field of engines, in particular to a variable length connecting rod mechanism and a control method of a variable compression ratio engine. Background technique [0002] The compression ratio of a general engine cannot be changed, because the volume of the combustion chamber and the working volume of the cylinder are fixed parameters, which have been determined in the design. However, in order to enable modern engines to exert better efficiency in various changing working conditions, the running performance of the engine is improved by changing to changing. Among them, the variable valve drive technology has already been realized, and some people have tried to change the compression ratio as an important parameter from being fixed to "adaptive". It is very difficult and there has been no progress for a long time. In recent years, fuel consumption regulations have been gradually tightened, new technologies have emerged, eng...

Claims

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Application Information

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IPC IPC(8): F02B75/04F02D15/02F16C7/06
CPCF02B75/045F02D15/02F16C7/06
Inventor 张薛宏樊行健
Owner 无锡雅佳德音科技有限公司
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