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Reciprocating piston engine with elliptical cams

An elliptical cam, reciprocating piston technology, applied in the direction of machine/engine, mechanical equipment, etc., can solve the problem of complex differential mechanism, achieve the effect of low cost, high power density, and easy manufacturing

Inactive Publication Date: 2015-04-01
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this prior art differential mechanism is very complicated

Method used

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  • Reciprocating piston engine with elliptical cams
  • Reciprocating piston engine with elliptical cams
  • Reciprocating piston engine with elliptical cams

Examples

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Embodiment 1

[0018] like Figure 1 to Figure 4 As shown, this embodiment includes: a main shaft 1, four pistons 3, four connecting rods 7, two cylinders 4 and four elliptical cams 2, wherein: the main shaft 1 passes through the cylinder 4 and is connected with the four elliptical cams 2 The centers of the elliptical cams 2 are connected in turn, and the two adjacent elliptical cams 2 form a phase angle of 45° with each other. Each elliptical cam 2 is connected with a connecting rod 7, and each connecting rod 7 is connected with a piston 3. There are two cylinders respectively, and each cylinder is respectively connected with the central shaft of a connecting rod.

[0019] The connecting rod 7 includes: a main body and a central shaft in the shape of two diagonal sectors, wherein: the central shaft is connected to the side center of the main body, and the two diagonal sectors of the main body are opposite to the outer surface of the elliptical cam 2. cut so that the two faces are perpendic...

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PUM

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Abstract

The invention discloses a reciprocating piston engine with elliptical cams in the technical field of a piston-type engine. The reciprocating piston engine with elliptical cams comprises a main shaft, four pistons, four connecting rods, two cylinder bodies and four elliptical cams, wherein the main shaft penetrates through the cylinder bodies and are sequentially connected with the centers of the four elliptical cams; two adjacent elliptical cams form a 45-degree phase angle mutually; each elliptical cam is respectively connected with a connecting rod; each connecting rod is respectively connected with a piston; each cylinder body is respectively provided with two air cylinders; each air cylinder is respectively connected with a connecting rod. According to the invention, the reciprocating angular displacement motion of the pistons is directly converted into the rotation of the main shaft through the conjugate curve surface motion of the elliptical cams and the right-angle-type connecting rods; moreover, the design of sector pistons is adopted, the high-power density is met; the reciprocating piston engine with elliptical cams is simple in structure, is easy to manufacture, and is low in cost.

Description

technical field [0001] The invention relates to a device in the technical field of piston engines, in particular to a reciprocating piston engine with an elliptical cam. Background technique [0002] There are two main types of piston engines: reciprocating piston engines and rotary piston engines. The reciprocating piston engine was first developed by German engineer Otto, with the crank slider as the power system. The characteristic is that the transmission mechanism is simple and reliable, and the disadvantage is that the power density is small. Rotary piston engines are divided into two categories, one is Wankel rotary engine, which directly outputs power with a fixed ratio of rotation and revolution speed of the rotor and the cylinder block to form a cylinder of varying volume. The characteristic is that the power density is high, and the shortage is the difficulty of sealing. Another type is the Kauertz engine, which has two rotors, each with a pair of opposite pist...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02B75/40
Inventor 阎达郭为忠
Owner SHANGHAI JIAO TONG UNIV