Plastic electric-spraying throttle valve body assembly
A technology of electric fuel injection throttle and throttle, which is applied in mechanical equipment, engine control, machine/engine, etc., can solve the problems of different thermal expansion coefficients of metal and plastic, leakage of bypass channels, etc., to achieve rapid exchange, avoid leakage, extend The effect of service life
Inactive Publication Date: 2012-11-21
SICHUAN HONGGUANG AUTO MACHINERY ELECTRONICS
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Problems solved by technology
[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, to provide a plastic EFI throttle body assembly, to realize the exchange of the plastic throttle body and the metal throttle body in the engine assembly process and after-sales maintenance, and to solve the problems caused by the metal throttle body. The problem of side channel leakage occurs due to different thermal expansion coefficients from plastics
Method used
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[0026] The present invention will be further described below in conjunction with accompanying drawing:
[0027] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown, a plastic EFI throttle body assembly includes a throttle body 1, a throttle shaft 2, a throttle plate 3, a torsion spring 4, a swivel frame 5, a position sensor 6, a stepping motor 7, and a card 14 , Idle adjustment screw 17 and flange 18.
[0028] Throttle valve body 1 is a uniform thin-walled structure, using PPS plastic plus glass fiber as the base material for one-time injection molding, including the intake main channel 8 and idle speed bypass channel 9, the metal insert 10 is fixed on the flange 18, and the intake air A number of reinforcing ribs 19 are provided at the connection between the main channel and the flange 18 .
[0029] The throttle body 1 includes an idle screw mounting insert 11, a stepping motor and position sensor mounting insert 12 and a flange mounting insert 10, and the stepp...
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The invention discloses a plastic electric-spraying throttle valve body assembly, comprising a throttle valve body (1), a throttle valve spindle (2), a throttle valve piece (3), a torsion spring (4), a swing frame (5), a position sensor (6), a stepping motor (7), a flange plate metal insert (10), an idle screw mounting hole metal insert (11), stepping motor and position sensor mounting hole metalinserts (12), a card (14) and an idle adjusting screw (17), wherein a main channel (8) and an idle side channel (9) are arranged inside the throttle valve body (1), and a base of the throttle valve body (1) is provided with a flange plate (18). The plastic electric-spraying throttle valve body assembly has the beneficial effects that the defect of easy deformation of the main channel of the plastic throttle valve body can be effectively overcome, the fast interchange of a metal throttle valve body assembly and a plastic throttle valve body assembly in the process of assembly and after-sale maintenance of an engine is realized, and the leak problem of the side channel of the throttle valve body caused by different coefficients of thermal expansion is solved.
Description
technical field [0001] The invention relates to an electric fuel injection throttle body assembly, in particular to a plastic electric fuel injection throttle body assembly. technical background [0002] The EFI throttle body assembly is a key component in the automotive fuel injection system to control the air intake of the engine, and is mostly made of metal materials. [0003] Metal materials have good strength and machining performance, but their specific gravity is large, the material price is high, and the machining process is complicated, resulting in high manufacturing costs, while plastics have a small proportion and relatively low price, but their strength and machining performance Poor, large amount of deformation, difficult to control, so it is difficult to process the throttle body with plastic. [0004] The idling air intake bypass passages of the plastic EFI throttle body assemblies seen today are all concentric with the main passage and the air intake is ecc...
Claims
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IPC IPC(8): F02D9/10F02D9/02C08L81/02C08K7/14B29C45/00B29C65/08
Inventor 张楠肖传良张德政刘军白劲松周兴
Owner SICHUAN HONGGUANG AUTO MACHINERY ELECTRONICS