Gasoline engine with deviated crankshaft

Abstract

The invention discloses a gasoline engine with a deviated crankshaft. The gasoline engine is a piston engine and comprises an air cylinder, a piston, a connecting rod and the crankshaft. The central line of the crankshaft deviates from the vertical median line of the air cylinder, and the deviation quantity is 9-12mm. Within the deviation range, lateral force acting on the piston in a power stroke can be reduced effectively, then lateral pressure on the side face of the air cylinder by the piston is reduced, and therefore energy consumed due to friction between the piston and the wall of the air cylinder can be reduced accordingly. As a result, not only is the thermal efficiency of an internal-combustion engine proved, but also the service life of the air cylinder and the piston can be prolonged. Meanwhile, due to the deviated arrangement of the crankshaft, the stroke of the piston is increased, the acting time of the piston is prolonged, sufficient combustion of fuel is benefited, and more useful work can be obtained under the same combustion condition. Therefore, fuel economy is improved, and the overall performance of the gasoline engine is enhanced.

Description

Technical field [0001] The invention relates to the field of gasoline engines, in particular to a crankshaft offset gasoline engine. Background technique [0002] The gasoline engine uses gasoline as fuel. Because gasoline has low viscosity and evaporates quickly, gasoline can be injected into the cylinder with a gasoline injection system. After compression reaches a certain temperature and pressure, it is ignited with a spark plug to expand the gas and do work. The crankshaft is the main rotating part of the gasoline engine and the power source of the gasoline engine. It forms the power transmission system of the gasoline engine together with the piston and the connecting rod. [0003] In the prior art, the center of the crankshaft circle point of a gasoline engine is located on the vertical centerline of the cylinder. The crankshaft rotates to cause the connecting rod to produce a flexible symmetrical swing arc. The piston is pushed by the connecting rod to reciprocate in the cyl...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the center of the crankshaft dot of the gasoline engine is located on the vertical centerline of the cylinder. The rotation of the crankshaft causes the connecting rod to produce a flexible and symmetrical swing arc. The piston is pushed by the connecting rod to reciprocate in the cylinder. When the crankshaft turns to 90 degrees, the crankshaft torque and the inclination angle of the connecting rod are at the maximum value. At this time, a large lateral horizontal component force will be generated on the piston, which will cause a large friction between the piston group, the connecting rod bearing and the cylinder wall. , which in turn causes the overall power loss of the gasoline engine and reduces the fuel efficiency of the gasoline engine

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