Engine and its supply system

Abstract

The invention discloses an engine and its supply system. The supply system of the engine comprises: a first oil rail, on which first and second inlets and a plurality of first outlets are arranged; a plurality of fuel injectors, including : The valve seat is provided with first and second inlets and injection ports, and the first inlets of a plurality of fuel injectors are respectively connected with a plurality of first outlets; the first valve body and the second valve body, the first, second The second valve body opens and closes the first and second inlets respectively; the second oil rail is provided with a third inlet and a plurality of second outlets, and the plurality of second outlets are connected with the second inlet and a plurality of second outlets respectively. The second inlet is connected; the fuel tank is connected with the third inlet. The supply system of the engine according to the embodiment of the present invention has the advantages of being able to realize the premixing of air and fuel, reducing the ventilation loss of the engine, improving the efficiency of the engine, simplifying the structure of the engine, reducing the cost and development difficulty of the engine, and the like.

Description

technical field [0001] The present invention relates to vehicle engineering, and in particular, to an engine supply system and an engine having the engine supply system. Background technique [0002] In the existing engine, the fuel reaches the fuel injector through the fuel rail, and then the fuel injector is injected to the designated position. In order to enhance the power performance and charging efficiency of the engine, multi-valve and supercharging devices are used. In order to improve the charging efficiency at medium and low speed and high speed, VVT (variable valve timing system) or variable intake manifold is required. Since the air entering the cylinder needs to go through two throttling, namely the throttle valve and the intake valve, the larger intake valve limits the size of the exhaust valve, which will cause a larger loss of air exchange. In addition, the application of technologies such as supercharging devices, VVT, variable intake manifold, and multi-val...

AI Technical Summary

Problems solved by technology

Since the air enters the cylinder, it needs to go through two throttling, namely the throttle valve and the intake valve. The larger intake valve limits the size of the exhaust valve, which will cause a large air exchange loss.

Moreover, the application of supercharging devices, VVT, variable intake manifold, multi-valve and other technologies not only greatly increases the cost of the engine, increases the difficulty of engine development, but also leads to complex structure of the engine.

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