CN201212420Y - Flexible power electronic spray air throttle - Google Patents

Abstract

The utility model relates to a flexible power electronic fuel injection throttle valve body which comprises a body, a throttle valve shaft, a throttle valve plate, a torsion spring and a stepping motor. The middle part of a channel in the body is in a straight tube shape, and the front and the rear parts of the channel are cones which are big in outside and small in inside. A supplement oil pipe port is arranged on the body. The throttle valve plate is an aluminum throttle valve plate, and the torsion spring is a double-torsion spring. A clamping ring which plays a role of limiting the throttle valve shaft is arranged on the throttle valve shaft. The utility model is a flexible power electronic fuel injection throttle valve body with good body structural strength, material saving and high inlet efficiency.

Description

Flexible power 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.

Simultaneously, the constantly soaring and non-renewable fact of oil along with gas price, other energy must substitute the power resources of gasoline as automobile, in this transition period, can use the motor of the flexible energy will have bigger advantage, as the critical piece of electric injection system, the electrospray throttle valve body also must satisfy the function that can use the flexible energy.

The model utility content

The purpose of this utility model provides flexible power electrospray throttle valve body a kind of special-purpose assorted design, that body structure intensity is good, intake efficiency is high.

This novel purpose is achieved in that a kind of flexible power electrospray throttle valve body, comprises body, throttle plate pin, throttle blade, torsion spring, stepper motor, the middle part of body internal channel is that straight barrel shape, front and rear portions are the little taper of outer imperial palace, and body is provided with the makeup oil interface tube.

Reserve tubing interface on the body, when using other fuel (as ethanol), can replenish oil-feed, guarantee to start and the idling speed requirement by oil pipe as power.

Compared with prior art, this novel beneficial effect is:

1, 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.

2, process lightening hole on the intake manifold junction surface, help to alleviate this body weight, reduce blow hole, reduce the die casting defective.

3, reserve tubing interface on the body, when using other fuel (as ethanol) as engine power, this oil pipe can replenish oil-feed, guarantees the rotating speed requirement under startup and the idling operation.

4, the heating pipe who designs on the body can effectively avoid throttle blade and stepper motor in the idle hidden danger of ice up in winter near stepper motor and throttle blade.

5, 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 axle sleeve of torsion spring warp and swing frame assembly one 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, swing frame assembly and axle sleeve integrated design 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, and is simultaneously easy to assembly.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.

6, throttle blade changes aluminium sheet into by the copper coin of general use, has reduced cost, has alleviated weight simultaneously.

Description of drawings

Fig. 1 is this novel plan view;

Fig. 2 is the sectional drawing of Fig. 1 along the A-A line;

Fig. 3 is the rear view of Fig. 1;

Fig. 4, Fig. 5 are respectively shown in Figure 1 novel three-dimensional views.

Embodiment

Fig. 1 illustrates, and body 2 is formed by aluminium alloy compression casting.The middle part of body 2 internal channels is straight barrel shape, and front and rear portions is the little taper of outer imperial palace (taper type of definitely saying so), the diameter identical (Fig. 2) of the end diameter of taper and straight tube; The intake manifold junction surface 11 uniform lightening holes 12 that are processed with on the body 2.Throttle plate pin 3 is installed on the body closure bearing hole, and throttle blade 4 adopts aluminium, is installed on the throttle plate pin 3.Be processed with the interface that is used for mounting point sensor 9 on the body, stepper motor 7 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 is a torsion spring 6, and the axle sleeve of torsion spring 6 warps and swing frame one is arranged on the throttle plate pin 3.Torsion spring 6 one ends are fixed on the body, and the other end is fixed on the swing frame assembly 1, and its torque makes swing frame reset (swing frame is not stressed, when being in idling conditions, throttle blade is in the closed position).Body is provided with intake manifold junction surface 11 (referring to Fig. 3), and it can well satisfy the seal request of plastic air intake manifold.The uniform lightening hole 12 that is processed with helps to reduce blow hole on the intake manifold junction surface 11, improves castability.Described stepper motor 7 is installed on the body, and the head of stepper motor is positioned at the idling by-pass, and the movement direction of stepper motor head is over against air flow.Swing frame adopts plastic materials, and the spacing leg of control throttle opening is a Structural Hardware, can proof strength save cost of material again.Support 5 is installed on the body, and acceleration cable is walked around from support, is connected with swing frame again.Riveted joint has water pipe 8 on the body 2, and water pipe makes under stepper motor and the throttle blade situation that temperature is lower in the winter time and do not freeze on every side, so that closure physical efficiency proper functioning near stepper motor and throttle blade simultaneously.Guaranteed under the throttle body situation that temperature is lower in the winter time, also can proper functioning.

Also be provided with the collar 13 that throttle plate pin 3 is played the axial limiting effect on the throttle plate pin 3, collar is installed in the bearing inboard of sensor side, can effectively control the axial float of throttle plate pin.

Also reserve tubing interface 10 on the body 2, this interface can guarantee fuel postinjection when using other fuel (as ethanol), guarantees the requirement of automobile starting and idling speed.

This throttle body model is HGD45-5.

Claims (6)

1, a kind of flexible power electrospray throttle valve body, comprise body (2), throttle plate pin (3), throttle blade (4), torsion spring, stepper motor (7) is characterized in that: the middle part of described body (2) internal channel is that straight barrel shape, front and rear portions are the little taper of outer imperial palace, and body (2) is provided with makeup oil interface tube (10).

2, according to the described electrospray throttle valve body of claim 1, it is characterized in that: the intake manifold junction surface (11) on the described body (2) is gone up the uniform lightening hole (12) that is processed with.

3, according to the described electrospray throttle valve body of claim 2, it is characterized in that: described throttle blade (4) is an aluminium matter throttle blade; Torsion spring is torsion spring (6).

4, according to the described electrospray throttle valve body of claim 3, it is characterized in that: the interface that is useful on mounting point sensor (9) on the described body (2).

5, according to the described electrospray throttle valve body of claim 4, it is characterized in that: described body (2) is gone up near stepper motor (7) and the riveted joint of throttle blade (4) position water pipe (8).

6, according to the described electrospray throttle valve body of claim 5, it is characterized in that: described throttle plate pin (3) is provided with the collar (13) that throttle plate pin is played position-limiting action.

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