Gasoline engine

Abstract

The invention relates to a gasoline engine, which comprises a piston, a combustion chamber and a fuel-oil supplying system, wherein the piston is formed by a piston top, a head, a pin seat and a skirt, wherein the ratio of the height of the skirt to the total height formed by the head and the skirt is 0.6 to 0.7, and the ratio of the chord length of the projection of the molded line of the skirt on a plane on the piston top to the diameter of a cylinder is 0.5 to 0.6; the combustion chamber is hemispheric and is jointly formed by a cylinder head, the piston top, a cylinder-head gasket and one part of a box body, and the surface-to-volume ratio delta of the combustion chamber is 0.15 to 0.25; the fuel-oil supplying system comprises a gasoline pump, a ventilating pipe and a negative-pressure pipe, wherein a negative-pressure impulse-type gasoline pump is adopted as the gasoline pump, the ventilating pipe is arranged on a cylinder head cover, one end of the negative-pressure pipe is connected with the ventilating pipe of the cylinder head cover, and the other end of the negative-pressure pipe is connected with the negative-pressure impulse-type gasoline pump. Through the improvement on structures, such as the piston, a connecting rod, a rocker and the like, the frictional work is reduced, and therefore the mechanical efficiency of the gasoline engine is greatly enhanced.

Description

technical field [0001] The invention belongs to the field of engines, in particular to a gasoline engine. Background technique [0002] The energy in today's society is increasingly tense, and people's calls for environmental pollution are also increasing. Gasoline engines must use the energy of every drop of fuel as much as possible, and reduce the pollution of emissions as much as possible. Gasoline engines burn gasoline inside. To obtain kinetic energy, the main components of a gasoline engine such as: the combustion chamber, whose volume distribution reflects the distribution of the gas, and matches with the position of the spark plug, determines the heat release law of combustion, the pressure rise rate and the work stability; the intake system , to provide clean and sufficient air for the full combustion of gasoline; the piston structure, under the pressure of the gas, makes a linear reciprocating motion in the cylinder, which is converted into the rotational motion of...

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Problems solved by technology

[0003] The structure of the gasoline engine is complex, and the connections between the structures are closely connected. Therefore, it affects the whole body. Based on the goal of energy saving, emission reduction and green sustainable development, the present invention starts from the air intake system, combustion system, oil cooling system, fuel supply, etc. The system, connecting rod, piston, rocker arm structure, etc. have been improved, and a high-efficiency, energy-saving and environmentally friendly gasoline engine with good power, economy and low emissions has been obtained to solve the problem of energy saving and emission reduction of existing gasoline engines. inadequacies of

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