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Double crank two-stroke engine

A double crank mechanism and engine technology, applied in the direction of machine/engine, mechanical equipment, etc., can solve problems such as low reliability, and achieve the effect of reducing friction loss, improving mechanical efficiency, and increasing power and torque

Active Publication Date: 2016-10-12
王蓬波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Ceramic material is a material with good heat insulation effect. If the parts of the cylinder liner, piston and other parts in direct contact with high-temperature gas are made of ceramic material, the actual thermal efficiency can be improved, but the low reliability caused by the brittleness of ceramic material becomes Technical obstacles in its application to engines

Method used

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Embodiment Construction

[0037] Below in conjunction with embodiment the present invention is further described.

[0038] As shown in the accompanying drawings, a two-stroke engine with a double crank mechanism includes a cylinder 2 and a piston capable of rectilinear reciprocating motion in the cylinder,

[0039] It comprises two crankshafts 1 facing up and down, the axes of the two crankshafts 1 are parallel, and the specifications are the same. There are three crankshafts 1-1 on each crankshaft 1. The phase angle at which the piston 7 and the outer piston 5 move in the opposite direction is theoretically 180 degrees. In practice, this angle should be corrected according to the actual situation due to the ignition advance angle, intake and exhaust advance angle, etc. A connecting rod 9 is hinged between the crank throws 1-1 corresponding to the two crankshafts 1, and there are three connecting rods 9 in total, forming a double crank mechanism;

[0040] There are two cylinders 2, the central axes of...

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Abstract

The invention discloses a two-stroke engine of a double-crank mechanism, and belongs to the technical field of engines. The two-stroke engine of the double-crank mechanism comprises upper and lower two crankshafts opposite to each other, and a gear transmission mechanism. Connecting rods are hinged between crank throws corresponding to the two crankshafts; three connecting rods form the double-crank mechanism; two cylinders are symmetrically arranged at the two sides of the crankshafts; inner pistons and outer pistons are oppositely arranged in the cylinders; combustion chambers are formed between the inner pistons and the outer pistons; the inner pistons at the two edges are fixed on one inner piston arm; the connecting rods penetrate through from the inner piston arms; outer piston arms at the two edges are mounted on one frame structure; the frame structure has two connecting plates; the connecting rods at the two edges of the crankshafts penetrate through the internals of the connecting plates; slide blocks are arranged on the connecting plates; a guide block is fixed in the engine; and a slide block is inserted in a guide rail. The two-stroke engine of the double-crank mechanism effectively reduces the wear and the impact of the pistons and cylinder sleeves, improves the reliability of ceramic materials applied to the engine, and improves actual heat efficiency.

Description

technical field [0001] The invention relates to a high-efficiency engine and belongs to the technical field of engines. Background technique [0002] It is known in the field of engines that the Otto thermodynamic cycle includes two isovolumic heat absorption and heat release processes, and two adiabatic compression and expansion processes. Taking the compression ratio of 10 as an example, the theoretical thermal efficiency is about 60%. A gasoline engine is an internal combustion engine that approximately follows the Otto cycle, and its actual thermal efficiency is about 30%. For example, the theoretical thermal efficiency is about 58%. A diesel engine is an internal combustion engine that approximately follows the Diesel cycle, and its actual thermal efficiency is about 35%. [0003] It can be seen that whether it is a gasoline engine or a diesel engine, the actual thermal efficiency is much lower than the theoretical thermal efficiency. One of the main reasons for this ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B75/32
Inventor 王蓬波周建涛刘洋
Owner 王蓬波
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