Integrated double-fuel injector and injection method thereof

Abstract

Disclosed are an integrated double-fuel injector and an injection method thereof, which relate to the technical field of double-fuel injectors. The integrated double-fuel injector comprises: a valve body provided with an oil cavity, an oil injection hole, an oil injection way, an intake channel, an oil control inlet channel, and an oil control return channel; a valve rod disposed in the oil cavity; a nozzle sleeve provided with a gas injection hole, the nozzle sleeve and the valve body defining a pressure adjustment cavity, and the pressure adjustment cavity communicating with the oil controlinlet channel, the oil control return channel and the gas injection hole, respectively; a pressure adjustment component disposed in the pressure adjustment cavity, the gas injection hole being isolated from the intake channel when the pressure adjustment component abuts against the end portion of the nozzle sleeve, and the pressure adjustment component being capable of moving relative to the nozzle sleeve to enable the intake channel to communicate with the gas injection hole when gas is introduced into the intake channel; and an oil control valve disposed on the oil control return channel. The integrated double-fuel injector disclosed in the present invention not only can implement three work modes, but also has the advantages of simple structure, low cost, better injection effect and noneed of modifying an engine.

Description

technical field [0001] The invention relates to the technical field of dual fuel injectors, in particular to an integrated dual fuel injector and an injection method thereof. Background technique [0002] Existing fuel injectors are generally used on engines with low fuel supply pressure, and mainly can only realize the injection of one type of fuel, that is, only one working mode can be satisfied. Although the existing dual-fuel injectors can inject two different However, due to its complex structure, high cost, poor injection performance and large changes to the existing engine structure, the existing dual-fuel burner cannot be widely used. Contents of the invention [0003] Based on the above, an object of the present invention is to provide an integrated dual-fuel injector, which can not only realize the injection of two fuels, but also has the advantages of simple structure, low cost, better injection effect and no need to modify the engine. [0004] Another object o...

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Problems solved by technology

[0002] Existing fuel injectors are generally used on engines with low fuel supply pressure, and mainly can only realize the injection of one type of fuel, that is, only one working mode can be satisfied. Although the existing dual-fuel injectors can inject two different However, due to its disadvantages of complex structure, high cost, poor injection performance and large changes to the existing engine structure, the existing dual-fuel burner cannot be widely used

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