Gaseous propellant engine agitator
A gas fuel and engine technology, which is applied to combustion engines, internal combustion piston engines, engine components, etc., can solve the problems of unsatisfactory nozzle stability and reliability, difficult to transplant to single-point injection, and unreliable working methods. The method is simple, the sealing performance is improved, and the manufacturing cost is low.
Active Publication Date: 2009-11-04
DONGFENG MOTOR CORP HUBEI
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Problems solved by technology
[0004] Most of the mixers nowadays adopt the Venturi type, which has irreparable defects in the improvement of power performance and the precise control of the air-fuel ratio. The nozzles used in some single-point injection systems are mostly the inlet and outlet gas concentrated at one end of the nozzle. A mountain-shaped clip is fixed to the nozzle, but the actual use proves that the nozzle installation hole on the mixer is easy to leak, and the nozzle with this structure is not ideal in terms of stability and reliability.
The nozzles with stable work and high precision are generally used in the arrangement of multi-point injection. The structure of the nozzle is the upper air intake and lower air outlet. The air inlet and outlet are located at both ends of the nozzle, and are installed with a long air rail On each nozzle, the installation is inconvenient. Due to the large length and volume of the air rail, it is not easy to transplant to the single-point injection method, and it is difficult to arrange it on the single-point system.
Most of the existing single-point injection systems use a piece of hose to connect the nozzle inlet to the gas pipe, which has potential safety hazards and unreliable working methods
Method used
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Embodiment Construction
[0021] see figure 1 , figure 2 In the gas fuel engine mixer shown, the main body 1 is a hollow structure, the cavity is the main air passage 2, and there is a connected cavity above it, namely the plenum chamber 3, and there is an air inlet hole at the front end of the plenum chamber 3 6. There are three air outlet holes 4 of the plenum chamber on the upper surface, and a circular groove 5 is processed outside each air outlet hole. There are two sensor mounting holes 8 on the side of the plenum chamber 3, and there is a protruding part on one side of the body. Three stepped holes are processed on it as nozzle installation holes 9, and the bottom cylindrical surface of each installation hole communicates with a round hole respectively. In the road, the hole 10 on the end face is plugged with a screw plug after processing.
[0022] see image 3 , Figure 4 As shown, the air rail pressure plate 15 is installed on the upper surface of the mixer pressure stabilizing chamber 3,...
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A gas fuel engine mixer comprises a main body and a gas chamber. The main body is composed of a main air flue; on sidewalls of the main air flue, a nozzle mounting hole is positioned; the nozzle mounting hole goes through a fuel gas injection hole and communicates with the main air flue; the gas chamber is in a hollow structure; the hollow part is a pressure stabilizing cavity; on the outer wall of the pressure stabilizing cavity, an air inlet port and an air outlet port are provided. The invention is characterized in that the gas chamber is also arranged with a gas rail pressure plate; the gas rail pressure plate comprises a gas rail, a nozzle fixing hole communicating with the gas rail, and an gas rail inlet port communicating with the air outlet port on the pressure stabilizing cavity; besides, a nozzle is positioned between the nozzle fixing hole on the gas rail pressure plate and the nozzle mounting hole on the sidewall of the main air flue. The invention is connected with the pressure stabilizing cavity and the nozzle through the gas rail pressure plate, so that installation and dismantling can be performed more simply, and operation can be more stable and reliable. Meanwhile, the invention can resolve the difficult problem of not convenient in single-point integrated layout for multi-point injection type nozzles, so that engines can work more stably and reliably and manufacturing cost can be lower.
Description
technical field [0001] The invention relates to a gas mixer, in particular to a gas fuel engine mixer for burning gas fuel. Background technique [0002] Today's society is developing rapidly and energy consumption is too fast, so a variety of gas alternative fuels that can replace gasoline and diesel have been gradually developed, such as liquefied petroleum gas, natural gas, hydrogen, etc. Gaseous fuel has the characteristics of good diffusivity and easy mixing, as well as outstanding economic efficiency and excellent emission performance. Therefore, engines burning gaseous fuel are gradually being accepted by users. [0003] The engine mixer is to fully mix gas and air to form a combustible mixture to supply the engine, and adjust the concentration and supply of the mixture according to the change of engine speed and load to adapt to different operating conditions of the engine such as starting, idling, and acceleration. To meet the needs of normal operation, to ensure t...
Claims
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IPC IPC(8): F02M21/04
CPCY02T10/32Y02T10/30
Inventor 程伟吴晓姜江
Owner DONGFENG MOTOR CORP HUBEI