Piston type internal combustion engine variable compression ratio adjusting device

A compression ratio adjustment, internal combustion engine technology, applied in the direction of mechanical equipment, machines/engines, etc., can solve the problems of small adjustment range, complex structure, high cost, etc., and achieve the effects of reduced lateral force, reduced height and weight, and reduced wear

Pending Publication Date: 2018-07-06
CHANGZHOU INST OF MECHATRONIC TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing variable compression ratio device such as the device of Toyota Motor Corporation is to change the relative position between cylinder and body; , the disadvantage of small adjustment range, so the application is greatly limited

Method used

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  • Piston type internal combustion engine variable compression ratio adjusting device
  • Piston type internal combustion engine variable compression ratio adjusting device
  • Piston type internal combustion engine variable compression ratio adjusting device

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Embodiment Construction

[0027] In order to make the content of the present invention more clearly understood, the present invention will be further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0028] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Likewise, words like "a" or "one" do not denote a limitation in quantity, but indicate that there is at least one.

[0029] Such as Figures 1 to 7 As shown, a piston-type internal combustion engine variable compression ratio adjustment device, including

[0030] The dowel rod 2 is used to connect with the piston. The dowel rod 2 is connected to the...

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PUM

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Abstract

The invention discloses a a piston type internal combustion engine variable compression ratio adjusting device. The device comprises a force transmission rod for being connected with a piston, a connecting rod, a swing rod and a cam, and the force transmission rod is used for transmitting the explosive force of a piston to the swing rod; the connecting rod is provided with a large head end and a small head end, and the large head end of the connecting rod is connected with a crankshaft for transmitting power to the crankshaft to drive the crankshaft to conduct rotation output; the left end ofthe swinging rod is rotatably connected with the force transmitting rod through a swinging rod pin, and the right end of the swinging rod is rotatably connected to the small head end of the connectingrod through a swing rod; the cam is provided with a cam shaft, the cam is an eccentric circular structure, the center of rotation of the cam shaft deviates a certain distance from the center of the cam, the cam shaft is mounted on a bearing hole of a body, the middle of the swing rod is mounted on the cam, and the swing rod is rotated around the cam shaft through the cam to change the center of the rotating and swing of the swing rod, thereby changing a top dead center of the piston. The device changes the compression ratio by changing the top dead center of the piston, and the compression ratio is continuously adjustable.

Description

technical field [0001] The invention relates to a variable compression ratio adjusting device of a piston type internal combustion engine, which belongs to the technical field of automobiles. Background technique [0002] At present, the most widely used engine is the piston internal combustion engine, and its very important working parameter, the compression ratio, is generally fixed. Since the compression ratio has a great influence on the economy, power and emission performance of the engine, and the operating conditions of the engine are ever-changing, in order to achieve good performance, the requirements for the compression ratio of the engine under different working conditions are Therefore, designing a variable compression ratio device can improve the performance of the engine under various operating conditions and achieve the required performance indicators. Existing variable compression ratio device such as the device of Toyota Motor Corporation is to change the r...

Claims

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Application Information

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IPC IPC(8): F02B75/04
CPCF02B75/04
Inventor 李彦傅华娟宋敬滨
Owner CHANGZHOU INST OF MECHATRONIC TECH
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