A diesel engine and its fuel injector
A diesel engine and fuel injector technology, which is applied to engine components, machines/engines, mechanical equipment, etc., can solve the problem of low oil-gas mixing uniformity, achieve full combustion, reduce emissions, and simplify the structure
Active Publication Date: 2021-04-16
SAIC MOTOR
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Problems solved by technology
[0005] The above-mentioned existing fuel injector adopts a fixed structure, and the mixing uniformity of oil and gas is not high
Method used
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Embodiment Construction
[0024] The invention provides a diesel engine and a fuel injector thereof. The fuel injector is changed from a fixed type to a rotary type so as to improve the mixing uniformity of oil and gas.
[0025] The present invention will be described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can accurately understand the technical solution of the present invention.
[0026] Such as figure 2 As shown, the present invention provides a fuel injector for a diesel engine, which is a multi-hole fuel injector. The fuel injector adopts a symmetrical structure and is symmetrically provided with more than four fuel injection holes 5. Theoretically speaking, due to the The oil injector adopts a symmetrical structure, so the structure of the oil beam is symmetrical. If the injector is changed from a fixed type to a rotating type, it will not affect the mixing, but can improve the uniformity of oil and gas mixing.
[0027] The fuel injector o...
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The invention provides a diesel engine and a fuel injector thereof. The fuel injector is changed from a fixed type to a rotary type so as to improve the mixing uniformity of oil and gas. The fuel injector of the present invention is a hole-type fuel injector, which is symmetrically provided with more than four fuel injection holes, and includes a fixed part and a rotating part connected by a rotating shaft, the fixed part is provided with an oil inlet, and the rotating part The oil injection hole is provided; one end of the rotating shaft is rotatably connected to the fixed part, and the other end is fixedly connected to the rotating part, so as to drive the rotating part to rotate in the direction opposite to the intake vortex. The fuel injector is also provided with an oil passage for connecting the fixed part and the rotating part. When the injector needs to inject fuel, the rotating shaft drives the rotating part to rotate, and the rotating part rotates in the direction opposite to the intake vortex, thereby injecting fuel in the opposite direction to the intake vortex, so that the oil and gas are fully mixed and the mixture of oil and gas is improved Uniformity, so as to realize the full combustion of fuel oil and reduce the emission of combustion pollutants.
Description
technical field [0001] The invention relates to the technical field of diesel engine combustion systems, in particular to a diesel engine and a fuel injector thereof. Background technique [0002] The orifice injector has high injection pressure and good spray quality, and is suitable for diesel engines with integral combustion chambers. Existing diesel engines mainly use multi-hole injectors, the injection pressure is generally 1600bar-2000bar, and the number of holes is generally 6-8. Since the diesel engine mainly uses an ω-shaped combustion chamber, the structure of this combustion chamber is very symmetrical, so the fuel injector is generally also a symmetrical structure in order to match the combustion chamber. [0003] Please refer to figure 1 , figure 1 It is a schematic structural diagram of a typical fuel injector in the prior art. [0004] Such as figure 1 As shown, in the prior art, the fuel injector is a fixed structure, with an oil inlet 1' and an oil inje...
Claims
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IPC IPC(8): F02M61/10F02M61/18F02M61/16
CPCF02M61/10F02M61/16F02M61/162F02M61/1806
Inventor 丁宁徐政陈明张小矛
Owner SAIC MOTOR