Reciprocating piston engine with elliptical cams
A technology of elliptical cam and reciprocating piston, which is applied in the direction of machines/engines, mechanical equipment, etc., can solve the problems of complex differential mechanism, achieve the effect of low cost, simple structure, and high power density
Inactive Publication Date: 2013-10-09
SHANGHAI JIAO TONG UNIV
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But this prior art differential mechanism is very complicated
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Embodiment 1
[0018] Such as 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 cylinders 4 and connects with the four elliptical cams 2 The centers of the elliptical cams are connected in turn, and the adjacent two elliptical cams 2 form a phase angle of 45° with each other, and each elliptical cam 2 is connected with a connecting rod 7, and each connecting rod 7 is connected with a piston 3, and each cylinder body 4 There are two cylinders respectively, and each cylinder is connected with the central axis of a connecting rod respectively.
[0019] The connecting rod 7 includes: a main body and a central shaft shaped as two diagonal sectors, wherein: the central shaft is connected to the center of the sides of the main body, and the two surfaces of the two diagonal sectors of the main body are in contact with the outer surfaces of the ellip...
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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 a piston engine, in particular to a reciprocating piston engine with an elliptical cam. Background technique [0002] Piston engines mainly include reciprocating piston engines and rotary piston engines. The reciprocating piston engine was first successfully developed by German engineer Otto, using 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 further divided into two categories, one is the Wankel rotary engine, which uses a fixed ratio of the rotation and revolution speed of the rotor to surround the cylinder with a variable volume to directly output power. It is characterized by high power density, but the disadvantage is that it is difficult to seal. The other type is the Kurtz engine (Kauertzengine), which has two rotors, each with a pa...
Claims
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IPC IPC(8): F02B75/40
Inventor 阎达郭为忠
Owner SHANGHAI JIAO TONG UNIV