CN201110226Y - Improved electric spraying choker body - Google Patents

Abstract

The utility model relates to an improved electronic injection throttle body, which belongs to air inlet components of an automobile fuel system and comprises a body, a throttle shaft which is arranged on a passage in the body through a bearing frame, a throttle flap which is installed on the throttle shaft and a rotary frame with a bracing wire slot, wherein a torsion spring adopts a double torsion spring, and the double torsion spring is installed on the throttle shaft through a spindle sleeve. The middle portion of the body is a straight body shape and an inner passage is a conical contour whose top is big and bottom is small. The throttle body can increase the working normality of the torsion spring and can guarantee the accurate position of the throttle flap.

Description

Improved electrospray throttle valve body

Technical field

The utility model relates to automotive engine component, is the electrospray throttle valve body of vehicle fuel system specifically.

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, 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 prompting 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, after existing throttle body in use exists torsion spring to occur unusually, make throttle blade accurately return even clamping stagnation, perhaps because of the mounting point precision offset of torsion spring on throttle plate pin, cause equally throttle blade accurately return problem (in addition, the unidirectional play of throttle plate pin, cause the unidirectional of throttle blade to move, make throttle blade and chamber body friction and the accurate problem that misplaces of return, generation.To this type of throttle blade problem of misalignment, the inventor be called in name give in the patent application of " axial clearance control mechanism " to solve).

The model utility content

The purpose of this utility model provides a kind of improved electrospray throttle valve body, to improve the torsion spring functional reliability, to guarantee the accurate return of throttle blade.

This novel purpose is achieved in that a kind of improved electrospray throttle valve body, comprise body, be located at throttle plate pin on the body internal channel through bearing bracket stand, be installed in the throttle blade on the throttle plate pin, torsion spring, swing frame with backguy groove, torsion spring are torsion spring, and the torsion spring warp beam sleeve is installed on the throttle plate pin; The body middle part is that stretched shape and its internal channel are up big and down small tapers.

Compare with existing throttle body, this novel beneficial effect is:

1, adopt torsion spring, help improving the return performance of throttle body in the throttle body assembly, idle stability, thus reduce motor vehicle exhaust emission, improve driving safety.Adopt torsion spring to replace single torsion spring, and the torsion spring warp beam sleeve is arranged on the throttle plate pin, guarantee the unlikely generation skew of torsion spring position on throttle plate pin and produced displacement, make accurately return of throttle plate pin, guarantee the normal operation of motor, axle sleeve can reduce the friction between torsion spring and body in addition, and the long torsion spring life-span of the court of a feudal ruler is improved the reliability of closure.In addition, after wherein a torsion spring occurred unusually, another root torsion spring can play a protective role in a short time, thereby has improved driving safety.

2, monolithic construction is adopted in this novel body air inlet by-pass, and profile is more compact, attractive in appearance, the saving material, and the stretched design is adopted at the body middle part, and the body wall thickness is even, and structural strength is better, and beautiful shape; And internal channel is up big and down small taper, the intake efficiency height.

3, the novel employing axial clearance regulation of basis mechanism can effectively control axial float, prevents that closure is because of the axial float hair fastener.

4, swing frame adopts plastic materials, and the spacing leg of control throttle opening is steel, can proof strength save cost of material again.

Description of drawings

Fig. 1 is this novel plan view;

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

Fig. 3 is the sectional drawing along the C-C line shown in Figure 1;

Fig. 4 is this novel stereogram;

Fig. 5 is the plan view of swing frame shown in Figure 1;

Fig. 6 is the sectional drawing of Fig. 5 along the B-B line.

Embodiment

Fig. 1 Fig. 2 illustrates, and body 5 is formed by aluminium alloy compression casting.Throttle plate pin 6 is installed on the body internal channel through bearing 2, and throttle blade 4 is installed on the throttle plate pin 6 through screw.Be processed with the interface 1 that is used for the mounting point sensor on the body, stepper motor 11 is installed on the body, the aperture of by-pass on the step motor control body is to adapt to engine idling condition.Torsion spring adopts torsion spring 8, and torsion spring warp beam sleeve 7 (Fig. 1) is arranged on the throttle plate pin 6.Torsion spring 8 one ends are fixed on the body, and the other end is fixed on the swing frame 9, and its axial force makes swing frame reset (swing frame is not stressed, when being in idling conditions, throttle blade is in the closed position).Referring to Fig. 2 Fig. 3, body 5 middle parts are stretched shape (cylindrical shape), and internal channel is up big and down small taper (referring to Fig. 2).Swing frame adopts plastic materials, is fixed with support (Fig. 6) on the swing frame, and the spacing leg 12 of control throttle opening is a metal material, can proof strength save cost of material again, and the advantage of plastic product own is a lot.The backguy groove radius of clean-up of swing frame 9 adopts non-linear design in addition, and the profile of backguy groove (referring to the radius of clean-up) is made up of three sections not isometrical circular arcs, has increased the travelling comfort that automobile is controlled greatly.Electrical apparatus element interface on the body is downward, guarantees that contact is working properly.Set up and be positioned at the inboard place of bearing 2 on the throttle plate pin 6 and be provided with draw-in groove, be with collar 3 on the draw-in groove, the thickness of collar 3 is less than the width of draw-in groove, and promptly collar 3 is enclosed within on the draw-in groove versatilely.Collar the axial float that can effectively control throttle plate pin is set.Riveted joint has intake pipe 10 on the body 5, makes the throttle body also can proper functioning under inclement weather conditions.Offer all-in-one-piece air inlet by-pass hole 13 on the body 5.Design has round boss 14 on the junction surface of the intake manifold of body, and it can satisfy the seal request of plastic air intake manifold well.

This electrospray throttle valve body (HGD44B) is mainly the supporting design of SIEMENS product.

Claims (7)

1, a kind of improved electrospray throttle valve body, comprise body (5), be erected at throttle plate pin (6) on the body internal channel through bearing (2), be installed in the throttle blade (4) on the throttle plate pin, torsion spring, have the swing frame (9) of backguy groove, it is characterized in that: described torsion spring is torsion spring (8), and torsion spring (8) warp beam sleeve (7) is installed on the described throttle plate pin (6); Body (5) middle part is that stretched shape and its internal channel are up big and down small tapers.

2, according to the described improved electrospray throttle valve body of claim 1, it is characterized in that: be positioned at the inboard place of bearing (2) on the described throttle plate pin (6) and be provided with draw-in groove, be with collar (3) on the draw-in groove, the thickness of collar (3) is less than the width of draw-in groove.

3, according to the described improved electrospray throttle valve body of claim 2, it is characterized in that: described body (5) is gone up riveted joint intake pipe (10).

4, according to the described improved electrospray throttle valve body of claim 3, it is characterized in that: offer all-in-one-piece air inlet by-pass hole (13) on the described body (5).

5, according to the described improved electrospray throttle valve body of claim 4, it is characterized in that: described body (5) is provided with the interface (1) that is used for the mounting point sensor.

6, want 5 described improved electrospray throttle valve bodies according to right, it is characterized in that: the material of described swing frame (9) is plastics, and is fixed with support on the swing frame.

7, according to the described improved electrospray throttle valve body of claim 6, it is characterized in that: the material of described body (5) is an aluminum alloy.

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