Venturi type integrated mixer for natural gas engine
A Venturi-type, natural gas technology, applied in the direction of combustion engines, engine components, machines/engines, etc., can solve problems that affect the working effect of the engine, uneven gas mixing, and damage to the cyclone
Active Publication Date: 2022-05-03
DONGFENG COMML VEHICLE CO LTD
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Problems solved by technology
However, setting the impeller upstream of the core in this mixer will cause the core to destroy the cyclone formed by the impeller, resulting in uneven gas mixing and affecting the working effect of the engine
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[0018] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0019] Aiming at the problem of poor mixing uniformity in existing mixers, the present invention designs a Venturi-type integrated mixer for natural gas engines. EGR exhaust gas enters the gas channel through the round hole on the wall surface and the air hole in the center cross arm, and the gas flow rate is increased by means of the Venturi structure. , relying on the relationship between flow velocity and pressure to improve mixing uniformity; natural gas enters the gas channel of the mixer through the round hole on the wall of the beam and the air groove in the center of the impeller to mix with the air, and then the mixed gas is disturbed by the impeller to form a cyclone, and the mixing is further improved in the subsequent pipeline Uniformity.
[0020] Please refer to figure 1 , the venturi type integrated mixer for natural ga...
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The invention discloses a Venturi type integrated mixer for a natural gas engine, which comprises a mixer shell, an EGR core fixed in the mixer shell, a natural gas beam and a natural gas impeller. The two ends of the mixer shell along the longitudinal axis respectively define air The inlet and the mixed gas outlet, the side of the mixer housing along the direction perpendicular to the longitudinal axis respectively define the EGR exhaust gas inlet and the natural gas inlet; A central cross arm is provided at the corresponding position of the inlet; the natural gas beam and the natural gas impeller are arranged at the rear end of the longitudinal axis of the EGR core and correspond to the natural gas inlet, and the natural gas impeller is provided with spoiler blades. In the Venturi-type integrated mixer for natural gas engines of the present invention, the EGR core controls gas flow velocity and pressure by means of a Venturi structure, and the natural gas impeller realizes flow disturbance, and improves mixing uniformity by virtue of the relationship between flow velocity and pressure.
Description
technical field [0001] The invention relates to the technical field of natural gas engines, in particular to a venturi type integrated mixer for natural gas engines. Background technique [0002] With the increasingly stringent emission regulations, EGR exhaust gas recirculation technology has developed greatly in the field of engines. In natural gas engines, EGR technology has also been more and more widely used this year. [0003] The combustible gas mixture of natural gas engine is divided into three parts: air, EGR exhaust gas and natural gas. The mixer of the EGR natural gas engine is divided into a gas mixer and an exhaust gas mixer. The gas mixer is used to mix natural gas and fresh air. The exhaust gas mixer is used to mix the mixed gas formed in the gas mixer with the EGR exhaust gas taken from the exhaust pipe. . [0004] After searching, Chinese Patent No. 201710093556.3 "Mixer for Gas Engine and EGR Mixer" discloses a mixer for a natural gas engine. The mixer ...
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IPC IPC(8): F02M26/19F02M21/04
CPCF02M26/19F02M21/04Y02T10/30
Inventor 徐恩泽邓磊李平殷勇张辉亚徐敏陈功军陈小迅李卫国
Owner DONGFENG COMML VEHICLE CO LTD