An engine variable displacement timing device and its operation method

Abstract

The invention relates to a variable displacement timing device in an engine and its operation method, including a crankshaft, a cylinder, and intake valves, exhaust valves, spark plugs, and fuel injectors arranged in the cylinder. The crankshaft is Variable hydraulic timing integrated crankshaft, the crankshaft is connected by several U-shaped tubes and hydraulic connecting rods to form a closed pipeline, the hydraulic connecting rod is divided into one-way hydraulic connecting rod and two-way hydraulic connecting rod, that is, the middle part of the crankshaft The U-shaped tubes of the crankshaft are connected by two-way hydraulic connecting rods, and the U-shaped tubes at both ends of the crankshaft are connected by one-way hydraulic connecting rods; each U-shaped tube is equipped with The bearing is connected to the connecting rod connected to the piston in the cylinder through the bearing; one side of the crankshaft is connected to a flywheel, and the other side is connected to a fixed liquid storage tank and a hydraulic pump through a sealing ring. The beneficial effect of the present invention is: the variable crankshaft timing system is used to make the engine running efficiency better and more efficient.

Description

technical field [0001] The invention belongs to the technical field of engines, in particular to an engine variable displacement timing device and its operation mode. Background technique [0002] Existing piston engine, its stroke is all fixed (being that displacement is fixed), and when connecting rod moves up and down in the cylinder, its suction stroke and acting stroke are equal, because engine is at the end of acting stroke, still A part of the pressure is not used, but the exhaust gas wastes this part of the energy; it leads to a great loss of engine energy and makes the fuel economy very low. The exhaust stroke of the existing engine, because the engine stroke is fixed, the piston cannot reach the top of the cylinder, so every time the work is completed, a part of the discharged exhaust gas will always remain in the cylinder and cannot be removed, which reduces the intake of the gas. Oxygen ratio loses the effective ratio of oxygen when the cylinder is compressed; i...

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Problems solved by technology

[0002] Existing piston engine, its stroke is all fixed (being that displacement is fixed), and when connecting rod moves up and down in the cylinder, its suction stroke and acting stroke are equal, because engine is at the end of acting stroke, still A part of the pressure is not used, but the exhaust gas wastes this part of the energy; it leads to a great loss of engine energy and makes the fuel economy very low

The exhaust stroke of the existing engine, because the engine stroke is fixed, the piston cannot reach the top of the cylinder, so every time the work is completed, a part of the discharged exhaust gas will always remain in the cylinder and cannot be removed, which reduces the intake of the gas. Oxygen ratio loses the effective ratio of oxygen when the cylinder is compressed; in the suction stroke, because the suction stroke of the existing technology is fixed for each suction work, that is, you have to suck it into the cylinder whether you need it or not. Therefore, the effective work of the engine is also reduced; in terms of compression, because the compression ratio is also fixed, the oil-air mixing ratio is also fixed, and the engine torque can only be increased by increasing the engine speed

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