Engine displacement variable device, engine and vehicle

Abstract

The invention relates to an engine displacement variable device, an engine and a vehicle. The engine displacement variable device comprises a crankshaft and a crankcase, at least two oil holes are formed in a main journal of the crankshaft and communicated with main oil duct holes in the crankcase respectively, and at least two independent oil ducts are formed. An eccentric shaft sleeve is mounted on a connecting rod journal of the crankshaft and comprises an eccentric part for mounting a large end of an engine connecting rod and an impeller part; a cover plate which forms a rotor cavity with a crank arm is arranged on the crank arm of the crankshaft; blades of the impeller part divide the rotor cavity into at least two independent cavities which are respectively communicated with the independent oil ducts; a valve is arranged between the main oil duct hole and the independent oil duct, the valve adjusts the flow and pressure of oil flowing into the independent cavities from the main oil duct hole, the blades are pushed to drive the eccentric shaft sleeve to rotate, and the displacement of the engine is changed. The invention further provides an engine which comprises the device. The invention further provides a vehicle which comprises the engine. The problem that the displacement of the engine is adjustable is solved.

Description

technical field [0001] The invention relates to the technical field of automobile engines, in particular to an engine displacement variable device, an engine and a vehicle. Background technique [0002] As engine fuel consumption regulations become increasingly stringent, higher requirements are placed on the thermal efficiency of gasoline engines. Among them, the variable engine displacement can effectively balance the power and economy of the engine, thereby effectively increasing the upper limit of thermal efficiency. The variable displacement device of gasoline engine is an important technical measure to further break through the power and economy. Therefore, the design and application of the variable displacement device is very important. [0003] In the prior art, the variable displacement device mainly realizes the deactivation of cylinders under individual working conditions through the valve mechanism, which mainly realizes the variability of displacement by reduci...

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Problems solved by technology

[0005] The object of the present invention is to provide a variable engine displacement device, engine and vehicle to solve the problem that the displacement of the engine can be continuously adjusted within a wide range, so as to improve the power and economy of the engine

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