CN200971810Y

CN200971810Y - Electrojet throttle body

Info

Publication number: CN200971810Y
Application number: CN 200620036276
Authority: CN
Inventors: 肖传良; 张德政; 万里军; 刘军; 廖永华; 邹斌
Original assignee: Sichuan Hongguang Auto Machinery Electric Co Ltd
Current assignee: Sichuan Hongguang Auto Machinery Electric Co Ltd
Priority date: 2006-11-16
Filing date: 2006-11-16
Publication date: 2007-11-07
Anticipated expiration: 2016-11-16

Abstract

A electro spray throttle plate is provided, which belongs to a throttle plate of a car electro spray fuel system, consists of a body, a throttle plate pin, a throttle plate piece, a swing frame, a twist spring a position sensor and a stepper motor to control the channel opening beside the body. Moreover, an axial direction gap control mechanism of the throttle plate pin is concluded, which is designed as fellow: the left side of the throttle plate pin which is closer to the bearing mounted on two bearings, is opened with a card slot covered by a collar, and the size of the card slot width is a little larger than that of the slot thickness. The utility model can get the throttle plate piece back and improve the idling speed stability, thereby reducing the motor vehicle exhaust and harmful gas exhaust, increasing driving safety.

Description

The electrospray throttle valve body

Technical field

The utility model relates to automobile component, and particularly the throttle body of automobile electronic fuel oil jet oil-fired system is made the field.

Background technique

The throttle body of domestic low and middle-grade automobile electronic fuel oil jet oil-fired systems mainly is the mechanical type throttle body at present, its gas handling system mainly is to drive swing frame by the motion of controlling acceleration cable to rotate, thereby throttle plate pin and throttle blade are rotated, and the aperture signal of throttle blade is exported to automobile electronic fuel oil jet system central unit ECU by position transducer.ECU is according to vehicle working condition and sensor signal, and the oil spout of indication oil sprayer makes gasoline and air be able to abundant mixing, reaches best chemically correct fuel, and gasoline is fully burnt, the content of toxic gas such as CO and oxynitrides in the vehicle exhaust when reducing idling operation.When engine start, idling operation, the stepper motor that ECU control is installed on the body rotates, and adjusts the aperture of by-pass on the throttle body, with the air inlet of control motor when each operating mode.

Throttle body is the key components and parts of control engine charge in the automobile fuel injection system, in use often because of the axial force of torsion spring on skew of the swing frame groove center face on acceleration cable and the throttle valve body or the throttle valve body, make throttle blade suffered axial force in rotation process excessive is the main reason that causes its " accurately return even clamping stagnation " to existing throttle body.When throttle blade was opened to several angle, throttle plate pin was in the following move left and right of the effect of axial force, made solar term sheet and chamber body friction and accurate return.When the assembling throttle blade, move though can partly control the unidirectional of throttle blade by the screw on the fastening again throttle blade behind the adjusting throttle plate pin gap, very inconvenience during practical operation, and reliability is low.Accurately return even clamping stagnation cause the motor car engine cisco unity malfunction.

The model utility content

Task of the present utility model provides a kind of electrospray throttle valve body that can control the axial motion of throttle plate pin convenient, reliably.

This novel task is achieved through the following technical solutions: a kind of electrospray throttle valve body, comprise body, throttle plate pin, throttle blade, swing frame, torsion spring, position transducer, the stepper motor of control body by-pass aperture, it is characterized in that, the axial clearance control mechanism that also has throttle plate pin: the position, left side that is erected at contiguous bearing on two throttle plate pins on the bearing has a draw-in groove, be with a collar on the draw-in groove, and the width of draw-in groove is slightly larger than the thickness of collar.

Above-mentioned axial motion control mechanism mainly is that a draw-in groove is opened in the end of a contiguous bearing on throttle plate pin, a collar is set in the draw-in groove, the thickness of collar is slightly less than the width of draw-in groove, the maximum that the gap of the two is throttle plate pin allows axial offset, promptly allow throttle plate pin that an an amount of skew is arranged, again its skew is constituted a restriction simultaneously.Like this, helping throttle body can move accurate return and be unlikely to clamping stagnation under the responsive to axial force of torsion spring or swing frame.

The utlity model has following advantage:

1, the utility model is applied on the throttle body, can reach the purpose of two-way control axial dipole field.

2, the utility model improves on existing matured product, optimizes, and makes it have the desired function of producer of system and cost is roughly constant, and after improving, product is compact more, and structure is more reasonable, attractive in appearance, and intensity is stronger.

3, the utility model helps improving return performance, the idle stability of throttle blade in the throttle body assembly, thereby reduces emission of automobile wastes, improves driving safety.

The friction of throttle blade and throttle body endoporus scraped the aluminium bits when 4, the utility model can be avoided engine operation, caused the closure clamping stagnation.

5, the utility model overall structure is more compact, and is attractive in appearance, and materials are more economized.

Description of drawings

Fig. 1 is this novel assembly structure chart;

Fig. 2 is the sectional structure chart along the A-A line shown in Figure 1;

Fig. 3-Fig. 7 is respectively plan view, left view, right elevation, the top and bottom perspective views of body shown in Figure 1;

Fig. 8-Figure 12 is respectively plan view, left view, right elevation, the top and bottom perspective views of swing frame shown in Figure 1;

Figure 13-Figure 16 is respectively plan view, left view, right elevation and the plan view of support shown in Figure 1.

Embodiment

Fig. 1 Fig. 2 illustrates, and the body 4 of closure (participating in Fig. 3-7) is formed by aluminium alloy compression casting.Throttle plate pin 3 is erected on two

bearings

11,12, and bearing 11,12 is fixed on the bearing hole of body 4, and throttle blade 5 is installed on the throttle plate pin 3.Position transducer 7 is installed on the body 4.Stepper motor 6 also is installed on the body 4, and the signal of position transducer is delivered to central unit ECU, and ECU is according to vehicle working condition, and the oil spout of indication oil burner is to reach best chemically correct fuel; Simultaneously, when engine start, idling operation, ECU control step motor rotates.The air inlet (part 9 be idling screw) of the aperture of by-pass to adapt to engine idling condition on the step motor control body.Referring to Fig. 8-12, swing frame 1 is the plastics swing frame, and swing frame is installed on the throttle plate pin.Torsion spring 2 one ends are fixed on the body, and the other end is fixed on the swing frame, can make swing frame reset (swing frame is not stressed, be in idling conditions, and throttle blade is in the closed position).Participate in Figure 13-16, support 8 is installed in the mounting hole top of body, with fixing backguy usefulness.Participate in Fig. 3-7, the side of body 4 is provided with the water circulation structure 4a as cooling water circulation.

Fig. 2 illustrates, the axial clearance control mechanism that also has a throttle plate pin on the body: throttle plate pin 3 is erected on two

bearings

11,12, the position, left side (being as the criterion with Fig. 2) of contiguous bearing 11 has a draw-in groove on the throttle plate pin, be with a collar 10 on the draw-in groove, and the width of draw-in groove is slightly larger than the thickness of collar, the gap of the two is construed as limiting axial motion, rotates (open and close) and return accurately reposefully to guarantee throttle blade.

This novel body wall thickness is even, the structural strength height, and function is complete, has reserved water circulation structure, thereby Structure is further optimized; This novel plastics swing frame wall thickness is even, and the structural strength height is easily manufactured, reality attractive in appearance With; The design of support makes supportive better, and has both artistic and practical advantage.

This throttle body is mainly used in the Chang'an car.

Claims

1, a kind of electrospray throttle valve body, comprise body (4), throttle plate pin (3), throttle blade (5), swing frame (1), torsion spring (2), position transducer (7), the stepper motor of control body by-pass aperture, it is characterized in that, the axial clearance control mechanism that also has throttle plate pin: the position, left side that the described throttle plate pin (3) that is erected on two bearings (11,12) is gone up contiguous bearing (11) has a draw-in groove, be with a collar on the draw-in groove, and the width of draw-in groove is slightly larger than the thickness of collar.

2, electrospray throttle valve body according to claim 1 is characterized in that, the support (8) with the backguy that fixes also is installed on the described body (4).

3, electrospray throttle valve body according to claim 1 is characterized in that, described swing frame (1) is the plastics swing frame.

4, according to claim 1 or 2 or 3 described electrospray throttle valve bodies, it is characterized in that, be reserved with water circulation structure (4a) on the side of described body (4) as cooling water circulation.