CN201074546Y - Modified type mechanical type choker body - Google Patents

Abstract

The utility model relates to an improved mechanical type throttle gate body, belonging to a throttle gate assembly of an engine intake system, which comprises a throttle gate body whose inner portion is provided with a main channel and a by-pass channel, a throttle gate shaft, a throttle gate flap, a rotation frame assembly and a torsion spring which are arranged on the throttle gate shaft and a stepping motor, wherein an idling adjustment base is fixedly arranged on the throttle gate body through screws, a heating water chamber is formed by one opening chamber of the idling adjustment base and a chamber on the throttle gate body, a idling by-pass channel is composed of one inner channel of the idling adjustment base and the by-pass channel of the throttle gate body, the stepping motor is fixed on the idling adjustment base, the head portion of the stepping motor is located in the idling by-pass channel, and the movement direction of the head portion of the stepping motor is justly opposite to the air flow direction. The utility model solves the problem of high idling extinction which is caused by return air flow, and has the characteristics that the idling by-pass channel is provided, the processing and the maintenance of the heating water cavity are convenient.

Description

Modified model mechanical type throttle body

Technical field

The utility model relates to automobile electronic fuel oil jet oil-fired system parts, especially for the air-throttle assemble technical field of car combustion engine engine aspirating system.

Background technique

Through bearing throttle plate pin is housed in the body of existing machinery formula throttle body, throttle blade be installed on the throttle plate pin and with body in the main passage form valve, control air mass flow with this; Torsion spring, swing frame assembly etc. is installed on the throttle plate pin.The unlatching of throttle blade is to link to each other with gas pedal in the operator cabin by swing frame assembly, wire rope and lever, the driver is by the pin accelerator pedal, draw trochanter valve swing frame assembly, the swing frame assembly draws the trochanter air valve shaft to control throttle opening, thereby change the area of closure place gas-entered passageway, regulate the air inflow of motor, reach under each operating mode of motor requirement air mass flow.The compensation of idling operation air mass flow meets the demands by idling by-pass and stepper motor cooperating together.And the operative orientation of the air flow of existing machinery formula throttle body idling by-pass and stepper motor in the same way, so that motor is when high idle speed, air-flow returns to scurry and enters the idling by-pass, returns gas blowby stream and makes stepper motor close the by-pass, causes motor flame-out when high idle speed.Simultaneously, existing product can not satisfy the ask for something of motor producer on the structure, as, motor producer requires air-throttle assemble that enough water heating functions are arranged, and requires heating location in stepper motor one side.The applicant once proposed to offer the idling bypass in body makes in the by-pass air flow over against the operative orientation of stepper motor and the design that adds hot water cavity, it can solve the flame-out problem that reaches heating function of above-mentioned high idle speed, but there is body internal bypass road and adds the bigger problem of hot water cavity difficulty of processing, and in case take place that the by-pass is stopped up or heating water temperature turnover water route is stopped up, will cause the whole throttle body can't proper functioning and the problem of subscription rate.

The model utility content

The purpose of this utility model provides a kind of modified model mechanical type throttle body, so that the operative orientation of stepper motor air flow and idling by-pass and add hot water cavity and all can make things convenient for manufacturing and convenient mediation to safeguard in the idling by-pass in the body.

This novel purpose is realized by following design: a kind of modified model mechanical type throttle body, comprise the tb that is provided with main passage and by-pass in it, throttle plate pin, throttle blade, be installed in swing frame assembly and torsion spring on the throttle plate pin, stepper motor, be mounted with the idle seat through screw on the tb, opening chamber of idle seat and the chamber on the tb constitute and add hot water cavity, an internal channel of idle seat is connected formation idling bypass channel with the by-pass of tb, stepper motor is installed on the idle seat, and the stepper motor head is arranged in the movement direction of idling bypass channel and stepper motor head over against air flow.

According to technique scheme, throttle body and idle seat to be made as two independent part processing, the end face of the two is fixed through four screw attachment, as complete tb parts, common heating water cavity and the idling by-pass formed.During die casting, on the idle seat opening chamber of die casting with body on chamber form and to add hot water cavity, internal channel of idle seat processing is to be connected formation idling by-pass with the by-pass of body.

Compare compared to existing technology, this novel beneficial effect is:

1, solved the difficult problem of manufacturing

Owing to can in idle seat and body, distinguish die casting opening chamber, thereby make the moulding that adds hot water cavity more convenient; What is more important because the aperture of idling by-pass is little, passage is long, in body circuitous crooked (for satisfying in the by-pass air flow) over against the movement direction of stepper motor head, thereby (and body) difficulty of processing is bigger in a part.Because it is divided into two parts processes respectively, promptly processes one section by-pass in idle seat and body respectively, become complete idling by-pass after the two combination, thereby solved the difficult problem of body internal bypass road processing.

2, mediation is easy to maintenance

Owing to adopt detachable connecting mode between idle seat and the body,, can pull down the idle seat easily, easily to its cleaning, mediation, maintenance if the idling by-pass takes place or add the situation that hot water cavity water inlet and outlet road is stopped up.

3, solved the flame-out problem of motor high idle speed

The design is installed in stepper motor on the idle seat, the idle seat is fixed on the body again, the design of idling by-pass makes the air-flow direction of stepper motor head movement direction over against the idling by-pass in the idle seat simultaneously, avoid motor when high idle speed, to return the formation of gas blowby stream, solved the flame-out problem of available engine high idle speed.

Description of drawings

Fig. 1 Fig. 2 is respectively this novel plan view and plan view;

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

Fig. 4 is the sectional drawing along the B-B line shown in Figure 1;

Fig. 5 is the sectional drawing along the C-C line shown in Figure 2;

Fig. 6 is the sectional drawing along the D-D line shown in Figure 2;

Fig. 7 is the stereogram of tb shown in Figure 1;

Fig. 8 is the plan view of Fig. 7;

Fig. 9 is the sectional drawing along the E-E line shown in Figure 8;

Figure 10 is the stereogram of idle seat shown in Figure 1;

Figure 11 is a plan view shown in Figure 10;

Figure 12 is the sectional drawing along the F-F line shown in Figure 11;

Figure 13 is the sectional drawing along the G-G line shown in Figure 11.

Embodiment

Fig. 1 Fig. 2 illustrates, and is provided with main passage and by-pass in the tb 1, and throttle plate pin 2 is located at through bearing bracket stand on the main passage of tb, and throttle blade 3 is installed on the throttle plate pin, forms air intake valve on the body main passage.Swing frame assembly 5 and torsion spring 4 are installed on the throttle plate pin.Also be provided with position transducer socket 6 on the body.Referring to Fig. 7～13, idle seat 7 is fixed on the tb 1 (Fig. 7～Figure 10) through four screws.Opening chamber of idle seat 7 and the chamber on the tb constitute and add hot water cavity 11 (Fig. 3), an internal channel of idle seat is connected formation idling bypass channel (Fig. 5) with the by-pass of tb, stepper motor 8 is installed on the idle seat, and stepper motor head 8a is arranged in the movement direction of idling bypass channel and stepper motor head over against air flow (Fig. 6).Referring to Fig. 1, idle seat 7 is provided with and adds the inlet tube and outlet tube 9,10 that hot water cavity is communicated with.Inlet tube and outlet tube 9,10 is provided with is convenient to spacing boss 9a, the 10a of flexible pipe connection.This boss can limit the mounting point of flexible pipe, avoids the flexible pipe collar to be installed in water pipe 9 bending parts, has avoided flexible pipe to install and has leaked.

Claims (5)

1. modified model mechanical type throttle body, comprise the tb (1) that is provided with main passage and by-pass in it, throttle plate pin (2), throttle blade (3), be installed in swing frame assembly (5) and torsion spring (4) on the throttle plate pin (2), stepper motor (8), it is characterized in that: described tb (1) is gone up and is mounted with idle seat (7) through screw, opening chamber of idle seat (7) and the chamber on the tb constitute and add hot water cavity (11), and an internal channel of idle seat is connected formation idling bypass channel with the by-pass of tb; Described stepper motor (8) is installed on the idle seat, and stepper motor head (8a) is arranged in the movement direction of idling bypass channel and stepper motor head over against air flow.

2. according to the described modified model mechanical type of claim 1 throttle body, it is characterized in that: described idle seat (7) is provided with and adds the inlet tube and outlet tube (9,10) that hot water cavity (11) is communicated with.

3. according to the described modified model mechanical type of claim 2 throttle body, it is characterized in that: described inlet tube and outlet tube (9,10) is provided with is convenient to the spacing boss (9a, 10a) of flexible pipe connection.

4. according to the described modified model mechanical type of claim 3 throttle body, it is characterized in that: described idle seat (7) is fixed on the tb (1) through four screws.

5. according to the described modified model mechanical type of claim 4 throttle body, it is characterized in that: position transducer socket (6) is installed on the described tb (1).

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