TH29706B - Fuel injection valve - Google Patents

Abstract

DC60 (16/12/47) The fuel injection valve is provided which consists of the valve seat assembly (3), which has a conical seat (8) and the tongue seat (7), provided therein which contacts the fuel injection valve. With the tail end of the tongue (8), a flat fuel diffusion chamber (43), which extends radially from the seat valve (7), is formed between the components. the valve seat (3) and the injection plate (10) and a number of fuel injection holes (11), which are perforated in the injection plate (10), open in the fuel diffusion chamber (43), where the fuel injection holes ( 11) have been organized by giving radially separated outward from the valve seat (7), and when the height of the fuel diffusion chamber (43) is t1 and the length of the valve seat (7) is t2, then t2/t1 is greater than or equal to 2. Therefore, therefore it is possible to make The injection fuel is effectively atomized by adjusting the relationship between the length of The tongue hole and the height of the fuel diffusion chamber and relative positional relationship Between the tongue hole and the fuel injection hole to be rational. A fuel injection valve is provided consisting of a seat-shoulder assembly (3) with a conical seat (8) and a seat-shoulder hole (7), provided therein which is in contact with the terminal end of the seat-shoulder ( 8) The flat fuel diffusion chamber (43) extends radially from the valve seat (7). The fuel diffusion chamber (43) is formed between the seat valve assembly (3) and the body plate. injection (10) and a number of fuel injection holes (11), which are punched in the injection plate (10) open in the fuel diffusion chamber (43), where the fuel injection holes (11) are arranged by To be separated radially outward from the tongue hole (7), and when the height of the fuel diffusion chamber (43) is t1 and the length of the tongue hole (7) is t2, then t2/t1 is greater than or equal to 2. Thus, it is possible to atomize the fuel injection effectively by adjusting the relationship between the seat hole length and the height of the fuel diffusion chamber. and the relative positional relationship between the valve seat hole and the fuel injection hole to be causal

Claims (2)

1. The fuel injection valve, which is assembled with a tongue assembly with a tongue section. ;parts to assemble the tongue which has a cone-shaped tongue and a hole in the tongue which is prepared in it where the shoulder of the tongue will work together with the tongue and will cause the tongue hole to contact the tip of the tongue seat, the injection plate, where the injection plate is connected to the tongue seat assembly ; An annular fuel diffusion chamber and radially protrudes. where the fuel diffuser chamber is formed between the throttle assembly and the injection plate, and the tip of the valve seat opens in the middle of the fuel diffuser package; and a number of fuel injection holes wherein the fuel injection holes are punched in the nozzle plate by which to separate the outer radially from the shoulder hole and opened to the inside of the fuel diffusion chamber. where an annular concave is formed in the seat-shoulder assembly between the tip of the seat-shoulder and the up-end of the seat-shoulder hole so that a connection between which the fuel chamber can be arranged. It is bounded by a concave notch and a face at the front end of the tongue assembly of the tongue assembly. and where the fuel accumulator has a cone-shaped base. where the tongue hole is formed in such a way that When the height of the fuel diffusion chamber is t1 and the length of the valve seat is t2, t2/t1>= 2, therefore, the fuel flow from the fuel accumulator chamber is linear. where an annular nostril is formed for the connection between the base of the fuel chamber and the surrounding inner surface of the tongue hole. where the annular corners have a curved or tapered chamfer , and where the fuel diffusion chamber is bounded by an annular concave forming in the end face. The front of the valve seat assembly in such a way that the height of the fuel diffusion chamber section where the fuel injection holes face it is 20 to 110 µm. tongue rubella so that the fuel flow is radially radiated at high velocity to form a film in the fuel diffusion chamber and is removed from the walls. around the inside of the fuel injection hole 2. Fuel injection valve according to claim 1, where corners are formed for connection between the top surfaces of the fuel diffusion chamber. and the surface surrounding the inner lip of the tongue at such an angle It is designated as an arc-shaped or tapered corner.