Motor vehicle and engine thereof

Abstract

The invention discloses an engine. The engine comprises a transmission mechanism, a cylinder body, a piston and a variable oil cylinder, wherein the transmission mechanism, the cylinder body, the piston and the variable oil cylinder are matched with each other, the inner end of the piston is inserted into the cylinder body, a partition can be arranged in the middle of the variable oil cylinder in the axial direction of the piston in a reciprocating mode, the extension plane of the partition is perpendicular to the axis of the piston, the periphery of the partition is tightly abutted with the inner wall of the variable oil cylinder, an inner cavity of the variable oil cylinder can be divided into a first cavity which is close to the cylinder body and a second cavity which is far from the cylinder body by the partition, and the outer end of the piston is inserted into the first cavity and is linked with the partition; the transmission mechanism comprises a crankshaft gear, a high-pressure oil pump and a camshaft driving wheel which sleeve the interior of a driving belt and are arranged in sequence in a power transmission direction, and the oil output end of the high-pressure oil pump respectively communicates with the first cavity and the second cavity through oil pipes. The engine has the capability of realizing the variable compression ratio. The invention further discloses a motor vehicle which uses the engine.

Description

technical field [0001] The invention relates to the technical field of motor vehicle supporting components, in particular to an engine. The invention also relates to a motor vehicle using the engine. Background technique [0002] In recent years, with the continuous development of engine processing and manufacturing technology, the domestic demand for engine power, torque and light weight has continued to increase. Regulations have strict requirements on emissions and fuel consumption. The concept of variable compression ratio has been proposed. Low-speed performance and high-speed performance, and to ensure the fuel consumption index of the engine, the variable compression ratio plays an indelible role in improving the performance of the engine and improving fuel economy. [0003] However, in the existing motor vehicle engines, the engines usually do not have the ability to change the compression ratio, which undoubtedly restricts the engine's adaptability to working condi...

AI Technical Summary

Problems solved by technology

[0003] However, in the existing motor vehicle engines, the engines usually do not have the ability to change the compression ratio, which undoubtedly restricts the engine's ability to adapt to working conditions and work performance, and adversely affects the overall driving performance of the motor vehicle.

Images