CN201635882U

CN201635882U - Throttle switch by-pass air supplying device

Info

Publication number: CN201635882U
Application number: CN2010201471305U
Authority: CN
Inventors: 周向东; 曾伟; 马文选
Original assignee: Lifan Industry Group Co Ltd
Current assignee: Lifan Technology Group Co Ltd
Priority date: 2010-03-31
Filing date: 2010-03-31
Publication date: 2010-11-17
Anticipated expiration: 2020-03-31

Abstract

The utility model discloses a throttle switch by-pass air supplying device, comprising a throttle switch valve body, the input port of the throttle switch valve body is communicated with an air filter by an air inlet pipeline, the output port of the throttle switch valve body is communicated with an induction manifold by an air supplying pipeline; the throttle switch by-pass air supplying device is characterized in that: the throttle switch by-pass air supplying device further comprises a quantitative by-pass valve, the air inlet of the quantitative by-pass valve is communicated with the air filter, and the air outlet of the quantitative by-pass valve is communicated with the induction manifold; the throttle switch by-pass air supplying device has the remarkable effects that: a stepping motor is cancelled, the production and maintaining cost is reduced, the volume of the throttle switch valve body is reduced, and the throttle switch valve body assembly difficulty is reduced, the throttle switch by-pass air supplying device can reliably realize stable control of 50 percent of the air flow rate in the throttle switch valve body, and the assembling positions of the throttle switch valve body and the quantitative by-pass valve are flexible.

Description

The throttle valve bypass air feeder

Technical field

The utility model belongs to the closure supply technology, and relating in particular to a kind of throttle valve bypass idling air feed is device.

Background technique

At present the closure air supply system of fuel combustion vehicle mostly comprises throttle valve body, as shown in Figure 2: the inlet opening of this throttle valve body communicates with empty filter through air inlet pipeline, the delivery outlet of this throttle valve body communicates with intake manifold through aspirating pipeline, intake manifold is connected on the motor, and the negative pressure that engine operation produced is aspirated the cleaned air in intake manifold, aspirating pipeline, throttle valve body, air inlet pipeline and the empty filter successively.Because motor is at different height above sea level air pressure, under the conditions such as temperature, its idling air compensation is different, therefore, the amount of oxygen that motor needs also has nothing in common with each other, for cooperating engine combustion to need, conventional art is that a stepper motor is installed on throttle valve body, the output shaft of stepper motor is connected with a plug, this plug is installed in the air feed main passage of throttle valve body, stepper motor receives the control of ECU, ECU is according to engine speed, data such as intake manifold suction pressure, judge the idling work situation of motor, the output control signal is given stepper motor, moves to drive plug, realization is finished the air flow control of throttle valve body interior 50% to the control of aperture in the air feed main passage.

The shortcoming of prior art is: each throttle valve body is to a stepper motor will be installed, this has increased the manufacture cost of throttle valve body greatly, also increased simultaneously the volume of throttle valve body, be not easy to the installation of throttle valve body, particularly on the very little motorcycle of installing space, the installation difficulty of long-pending greatly throttle valve body is bigger.

The model utility content

The purpose of this utility model provides a kind ofly can cancel stepper motor, reduce production costs, reduce the throttle valve body body volume, reduce the throttle valve bypass air feeder of throttle valve body installation difficulty, reliably realize the stable control of 50% air mass flow in the throttle valve body.

For achieving the above object, the utility model is explained a kind of throttle valve bypass air feeder, the inlet opening that comprises throttle valve body, this throttle valve body communicates with empty filter through air inlet pipeline, the delivery outlet of this throttle valve body communicates with intake manifold through aspirating pipeline, its key is: also comprise quantitative bypass valve, the suction port of this quantitative bypass valve communicates with described empty filter, and the air outlet of this quantitative bypass valve communicates with described intake manifold.

Throttle valve body is realized the basic air mass flow of motor required 50%, and quantitatively bypass valve is realized the adjustable air flow of motor required 50%.

The automatically controlled input end of described quantitative bypass valve is connected on the ECU.

ECU is according to data such as engine speed, intake manifold suction pressures, judge the idling work situation of motor, ECU output Pulse wave is controlled the break-make of quantitative bypass valve, utilizes the flow of the dutycycle control bypass gas circuit of Pulse wave, realizes the stable control of 50% air mass flow.

The suction port of described quantitative bypass valve is connected on the described empty filter by the road, and the air outlet of this quantitative bypass valve is connected on the described aspirating pipeline by the road.

Remarkable result of the present utility model is: a kind of stepper motor of having cancelled is provided, reduce production costs, reduce the throttle valve body body volume, reduce the throttle valve bypass air feeder of throttle valve body installation difficulty, reliably realize the stable control of 50% air mass flow in the throttle valve body.The mounting point of throttle valve body and quantitative bypass valve is more flexible, has reduced the system maintenance cost.

Description of drawings

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the prior art constructions schematic representation.

Embodiment

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.As shown in Figure 1, a kind of throttle valve bypass air feeder, the inlet opening that comprises throttle valve body 1, this throttle valve body 1 communicates with empty filter 3 through air inlet pipeline 2, the delivery outlet of this throttle valve body 1 communicates with intake manifold 5 through aspirating pipeline 4, also comprise quantitative bypass valve 6, the suction port of this quantitative bypass valve 6 communicates with described empty filter 3, and the air outlet of this quantitative bypass valve 6 communicates with described intake manifold 5.

The automatically controlled input end of described quantitative bypass valve 6 is connected on the ECU7.

The suction port of described quantitative bypass valve 6 is connected on the described empty filter 3 by the road, and the air outlet of this quantitative bypass valve 6 is connected on the described aspirating pipeline 4 by the road.

Its working principle is:

ECU is according to data such as engine speed, intake manifold 5 suction pressures, judge the idling work situation of motor, ECU output Pulse wave is controlled the break-make of quantitative bypass valve 6, utilizes the flow of the dutycycle control bypass gas circuit of Pulse wave, realizes the stable control of 50% air mass flow.

Throttle valve body 1 is realized the basic air mass flow of motor required 50%, and quantitatively bypass valve 6 is realized the adjustable air flow of motor required 50%.

Although above structure is described preferred embodiment of the present utility model in conjunction with the accompanying drawings; but the utility model is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic rather than determinate; those of ordinary skill in the art is under enlightenment of the present utility model; under the prerequisite of the utility model aim and claim; can make multiple similar expression; as the suction port of changing quantitative bypass valve 6 is connected with air pipe 2; the air outlet is connected with intake manifold 5; by modes such as other single chip circuit controls, such conversion all falls within the protection domain of the present utility model.

Claims

1. throttle valve bypass air feeder, the inlet opening that comprises throttle valve body (1), this throttle valve body (1) communicates with empty filter (3) through air inlet pipeline (2), the delivery outlet of this throttle valve body (1) communicates with intake manifold (5) through aspirating pipeline (4), it is characterized in that: also comprise quantitative bypass valve (6), the suction port of this quantitative bypass valve (6) communicates with described empty filter (3), and the air outlet of this quantitative bypass valve (6) communicates with described intake manifold (5).

2. according to the described throttle valve bypass air feeder of claim 1, it is characterized in that: the automatically controlled input end of described quantitative bypass valve (6) is connected on the ECU (7).

3. according to the described throttle valve bypass air feeder of claim 1, it is characterized in that: the suction port of described quantitative bypass valve (6) is connected on the described empty filter (3) by the road, and the air outlet of this quantitative bypass valve (6) is connected on the described aspirating pipeline (4) by the road.