Automobile air throttle controller

Abstract

The utility model provides an automobile air throttle controller which comprises a valve position sensor, a signal processing circuit, a control circuit, an accelerator pedal position sensor, a starting limiting circuit and a valve driving circuit. The valve position sensor is installed beside a valve plate in the air throttle and used for detecting the opening degree of the valve plate in the air throttle, the output end of the valve position sensor is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the first input end of the control circuit. The accelerator pedal position sensor is installed on an automobile accelerator pedal and used for detecting the position of the automobile accelerator pedal. The output end of the accelerator pedal position sensor is connected to the second input end of the control circuit through the starting limiting circuit, and the control end of the starting limiting circuit is connected to the first output end of the control circuit. The automobile air throttle controller solves the problem that in the prior art, the opening degree of an accelerator within a certain time after an automobile is started cannot be controlled to be 40%.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile valve control, specifically relates to a kind of automobile throttle valve controller. BACKGROUND

[0002] Car contains throttle valve, valve driver, accelerator pedal position sensor, engine, motor driver, valve position sensor, signal processing circuit and control circuit, throttle valve is installed on intake system, throttle valve controls the size of intake system intake, accelerator pedal position sensor is installed in accelerator pedal position, engine realizes oil supply, engine operates under the control of motor driver, valve position sensor is installed in throttle valve valve piece position, valve position sensor is used to detect the opening of throttle valve, valve position sensor output end is connected to signal processing circuit, signal processing circuit output end is connected to control circuit first input end, accelerator pedal position sensor is connected to control circuit second input end, control circuit first output end is connected to valve driver control end, throttle valve operates under the control of valve driver, control circuit second output end is connected to motor driver control end, realizes according to accelerator pedal position sensor and valve position sensor control throttle valve operation.

[0003] Throttle valve includes: valve piece, valve body, rotating shaft, rotating driving mechanism and valve motor, valve body is opened and closed by valve piece, valve piece is fixed to rotating shaft, rotating shaft is connected to the output end of rotating driving mechanism, the output end of rotating driving mechanism is connected to the output shaft of valve motor, so that control circuit controls the rotation angle of valve motor by valve driver, to control the opening size of valve piece.

[0004] In order to protect engine, accelerator opening degree needs to be controlled at 30%-40% when car starts, but some drivers start to step on accelerator, and it is difficult to control accelerator opening degree, so that engine is easy to be damaged, so how to control accelerator opening degree to be controlled at 40% within a certain time after car starts is the problem to be solved by the present application. UTILITARY MODEL CONTENTS

[0005] The utility model provides a kind of automobile throttle valve controller, solves the problem that accelerator opening degree cannot be controlled at 40% within a certain time after car starts in prior art.

[0006] To achieve the above objectives, this utility model adopts the following technical solution: This utility model provides an automotive throttle valve controller, including: a valve position sensor, a signal processing circuit, a control circuit, an accelerator pedal position sensor, a start-limiting circuit, and a valve drive circuit; the valve position sensor is installed next to the valve plate in the throttle valve, and is used to detect the opening degree of the valve plate in the throttle valve; the output terminal of the valve position sensor is connected to the input terminal of the signal processing circuit, and the output terminal of the signal processing circuit is connected to the first input terminal of the control circuit; the accelerator pedal position sensor is installed at the accelerator pedal of the vehicle, and is used to detect the position of the accelerator pedal; the output terminal of the accelerator pedal position sensor is connected to the second input terminal of the control circuit through the start-limiting circuit, and the control terminal of the start-limiting circuit is connected to the first output terminal of the control circuit; the control circuit is communicatively connected to an external vehicle master controller, and the second output terminal of the control circuit is connected to the control terminal of the valve drive circuit, which drives the valve motor in the throttle valve to operate.

[0007] Furthermore, the start-up limiting circuit includes: a comparison module, a dual-condition judgment module, a switching drive module, and a transmission switching module. The input terminal of the comparison module is connected to the output terminal of the accelerator pedal position sensor, the output terminal of the comparison module is connected to the first input terminal of the dual-condition judgment module, the second input terminal of the dual-condition judgment module is the control terminal of the start-up limiting circuit, the output terminal of the dual-condition judgment module is connected to the control terminal of the switching drive module, the first moving terminal of the transmission switching module is connected to the input terminal of the comparison module, the second moving terminal of the transmission switching module is connected to the output terminal of a constant voltage supply circuit, the stationary terminal of the transmission switching module is connected to the second input terminal of the control circuit, and the switching drive module controls the transmission switching module to switch the stationary terminal to either the first moving terminal or the second moving terminal.

[0008] Furthermore, the accelerator pedal position sensor has only one output terminal, and the input terminal of the comparison module is directly connected to the output terminal of the accelerator pedal position sensor.

[0009] Furthermore, the accelerator pedal position sensor has at least two output terminals. Each output terminal of the accelerator pedal position sensor is connected to the input terminal of the comparison module via a current limiting circuit. The input terminal of the current limiting circuit is connected to the output terminal of the accelerator pedal position sensor, and the output terminal of the current limiting circuit is connected to the input terminal of the comparison module.

[0010] Furthermore, the control unit of the transmission switching module is grounded through the switching drive module. The transmission drive module includes a transistor Q1 and a resistor R3. The collector of transistor Q1 is connected to the low-voltage terminal of the control unit of the transmission switching module, the emitter of transistor Q1 is grounded through resistor R3, and the base of transistor Q1 is the control terminal of the switching drive module.

[0011] Furthermore, the emitter of transistor Q1 is a constant voltage supply to the output terminal of the circuit.

[0012] Further, the 12V output end of the automobile power supply is connected to an input end of a voltage reduction and stabilization chip, the voltage reduction and stabilization chip is a constant voltage supply circuit, and an output end of the voltage reduction and stabilization chip is an output end of the constant voltage supply circuit.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] In the application, the starting limiting circuit is arranged, the accelerator pedal position sensor is monitored, the transmission switching module in the starting limiting circuit is controlled to operate according to the output of the accelerator pedal position sensor, if the accelerator opening is small after starting, the transmission switching module keeps connecting the output end of the accelerator pedal position sensor to the second input end of the control circuit, the control circuit controls the operation of the throttle valve and the engine according to the accelerator opening output by the accelerator pedal position sensor, and the control circuit also drives the motor driver to drive the operation of the engine; if the accelerator opening output by the accelerator pedal position sensor is too large within a certain time after starting (since the control circuit is in communication connection with the automobile master controller, the control circuit knows the time length of starting), the transmission switching module is switched to connect the output end of the constant voltage supply circuit to the second input end of the control circuit, and the control circuit controls the operation of the throttle valve and the engine according to the voltage of the output end of the constant voltage supply circuit, so that the control of the accelerator opening within the certain time is realized, and even if the accelerator opening is too large, the engine is not driven according to the command of the large accelerator opening, but the operation of the engine and the throttle valve is controlled according to the starting accelerator opening of 40%, so that the engine is protected and the service life is prolonged.

[0015] Other advantages, objects and features of the utility model will be embodied partly through the following description, and will be understood by those skilled in the art through research and practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is the circuit diagram of the control circuit and the valve driving circuit.

[0017] Figure 2 It is the circuit diagram of the accelerator pedal position sensor and the starting limiting circuit when the accelerator pedal position sensor is a single output mode.

[0018] Figure 3 It is the circuit diagram of the accelerator pedal position sensor and the starting limiting circuit when the accelerator pedal position sensor is a multiple output mode. DETAILED DESCRIPTION

[0019] In order to make the technical means, creative features, purposes and effects realized by the utility model more clear and easy to understand, the utility model is further described below in combination with the drawings and specific embodiments:

[0020] The utility model provides a kind of automobile throttle valve controller, comprising: valve position sensor, signal processing circuit, control circuit U3, accelerator pedal position sensor CGQ1, start limiting circuit and valve drive circuit U4;Valve position sensor is installed in the valve piece next to throttle valve, valve position sensor is used to detect the opening of valve piece in throttle valve, the output end of valve position sensor is connected to the input end of signal processing circuit, and signal processing circuit output end is connected to control circuit first input end;Accelerator pedal position sensor is installed at automobile accelerator pedal, and accelerator pedal position sensor is used to detect the position at automobile accelerator pedal;Accelerator pedal position sensor output end is connected to control circuit second input end IN1 by start limiting circuit, and start limiting circuit control end is connected to control circuit first output end;Control circuit is communicatively connected with external automobile master controller, and control circuit second output end CTR1 is connected to valve drive circuit control end PWMA, and valve drive circuit drives valve motor M1 operation in throttle valve.

[0021] In the embodiment, as shown in Figure 1 The control circuit can mainly be composed of SMT32 series control chip, and the second output end of SMT32 can directly output PWM control signal to control the operation of valve drive circuit. The valve drive circuit can be TB6612FNG type motor drive chip, and of course can also be other type motor drive chip. When the valve drive circuit receives PWM control signal, it can control the forward rotation or reverse rotation of valve motor in throttle valve, so as to drive the opening of valve piece in throttle valve, and control the air supply of intake system during automobile engine oil combustion.

[0022] As shown in Figure 1 The motor drive chip AO1 pin and AO1' pin are connected to the first end of valve motor in throttle valve after connection, and the motor drive chip AO2 pin and AO2' pin are connected to the second end of valve motor in throttle valve after connection, so as to realize the forward rotation and reverse rotation drive of valve drive circuit to generator in throttle valve. Whether it is forward rotation or reverse rotation is judged by PWM control signal inputted by control circuit to valve drive circuit.

[0023] In the application, as shown in Figure 2As shown, the start limiting circuit comprises a comparison module, a double condition judging module, a switching driving module and a transmission switching module. The input end of the comparison module is connected to the output end of the accelerator pedal position sensor. The output end of the comparison module is connected to the first input end of the double condition judging module. The second input end of the double condition judging module is the control end of the start limiting circuit. The output end of the double condition judging module is connected to the control end of the switching driving module. The first moving end of the transmission switching module is connected to the input end of the comparison module. The second moving end of the transmission switching module is connected to the output end of a constant voltage supply circuit. The fixed end of the transmission switching module is connected to the second input end of the control circuit. The switching driving module controls the transmission switching module to switch the fixed end to the first moving end or the second moving end.

[0024] In the above, the comparison module comprises a comparator U1, resistors R1 and R2. The same phase input end of the comparator U1 is the input end of the comparison module. The first end of the resistor R1 is connected to a direct current power supply VCC (the direct current power supply VCC can be a direct current 5v voltage or a direct current 12v voltage). The second end of the resistor R1 is connected to the ground through the resistor R2. The second end of the resistor R1 is connected to the inverse phase input end of the comparator U1. The output end of the comparator U1 is the output end of the comparison module. The comparator U1 can be an LM311 type chip. Of course, the comparator U1 can also be other type chips.

[0025] As preferred, the double condition judging module is an AND gate U2. The AND gate U2 outputs a high level when the second output end CTR1 of the control circuit outputs a high level within a specified time after starting and the output voltage of the accelerator pedal position sensor is large (i.e. the accelerator opening degree is large), so as to control the switching driving module to be connected and control the transmission switching module to be powered, and the transmission switching module can be switched to connect the output end of the constant voltage supply circuit to the second input end IN1 of the control circuit. Of course, the double condition judging module can also be other chips to form the AND logic.

[0026] As preferred, the transmission switching module can be a relay RL1 with a single knife double throw switch. The coil of the relay RL1 is the control end of the transmission switching module.

[0027] As shown in Figure 2 When the accelerator pedal position sensor is a single output mode, the accelerator pedal position sensor has only one output end. The input end of the comparison module is directly connected to the output end of the accelerator pedal position sensor.

[0028] As shown in Figure 3 When the accelerator pedal position sensor is a multiple output mode, the accelerator pedal position sensor has at least two output ends. Each output end of the accelerator pedal position sensor is connected to a current limiting circuit. The input end of the current limiting circuit is connected to the output end of the accelerator pedal position sensor. The output end of the current limiting circuit is connected to the input end of the comparison module.

[0029] The transmission switching module control end is grounded through the switching driving module, and the transmission driving module comprises a transistor Q1 and a resistor R3, the collector of the transistor Q1 is connected to the low-voltage end of the transmission switching module control end, the emitter of the transistor Q1 is grounded through the resistor R3, and the base of the transistor Q1 is the control end of the switching driving module. The closing of the transistor Q1 is controlled to control whether the transmission switching module control end is powered on.

[0030] As an implementation mode, based on the above basis with the resistor R3, the emitter of the transistor Q1 is the output end of the constant voltage supply circuit. The constant voltage supply circuit needs to increase other components.

[0031] As another implementation mode, the 12V output end of the automobile power supply is connected to the input end of a voltage reduction and voltage stabilization chip, the voltage reduction and voltage stabilization chip is the constant voltage supply circuit, and the output end of the voltage reduction and voltage stabilization chip is the output end of the constant voltage supply circuit. Although the above mode uses the resistor R3, the number of components can be reduced, but the output voltage of the output end of the constant voltage supply circuit is unstable. Therefore, the voltage reduction and voltage stabilization chip (which can be an MC34063 chip, and of course, other types of voltage reduction and voltage stabilization chips) is used to ensure stable voltage output. The output voltage of the voltage reduction and voltage stabilization chip is adjusted to be consistent with the output voltage of the accelerator pedal position sensor when the accelerator opening degree is 40%.

[0032] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the utility model and are not limited. Although the utility model has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the utility model can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the utility model, and all should be covered in the scope of the claims of the utility model.

Claims

1. An automotive throttle valve controller characterized by comprising: The application relates to a valve position sensor, a signal processing circuit, a control circuit, a throttle pedal position sensor, a start limiting circuit and a valve driving circuit. The valve position sensor is installed beside a valve plate in a throttle valve, the valve position sensor is used for detecting the opening degree of the valve plate in the throttle valve, the output end of the valve position sensor is connected to the input end of the signal processing circuit, and the output end of the signal processing circuit is connected to the first input end of the control circuit. The throttle pedal position sensor is installed at a throttle pedal of an automobile, and is used for detecting the position of the throttle pedal of the automobile. The output end of the throttle pedal position sensor is connected to the second input end of the control circuit through the start limiting circuit, and the control end of the start limiting circuit is connected to the first output end of the control circuit. The control circuit is in communication connection with an external automobile main controller, the second output end of the control circuit is connected to the control end of the valve driving circuit, and the valve driving circuit drives a valve motor in the throttle valve to operate. The start limiting circuit comprises a comparison module, a double-condition judging module, a switching driving module and a transmission switching module, the input end of the comparison module is connected to the output end of the throttle pedal position sensor, the output end of the comparison module is connected to the first input end of the double-condition judging module, the second input end of the double-condition judging module is the control end of the start limiting circuit, the output end of the double-condition judging module is connected to the control end of the switching driving module, the first moving end of the transmission switching module is connected to the input end of the comparison module, the second moving end of the transmission switching module is connected to the output end of a constant voltage supply circuit, the non-moving end of the transmission switching module is connected to the second input end of the control circuit, and the switching driving module controls the transmission switching module to switch the non-moving end to be connected to the first moving end or the second moving end.

2. The automotive throttle valve controller according to claim 1, wherein The throttle pedal position sensor has only one output end, and the input end of the comparison module is directly connected to the output end of the throttle pedal position sensor.

3. The automotive throttle valve controller according to claim 2, wherein The throttle pedal position sensor has at least two output ends, and each output end of the throttle pedal position sensor is connected to a current limiting circuit, the input end of the current limiting circuit is connected to the output end of the throttle pedal position sensor, and the output end of the current limiting circuit is connected to the input end of the comparison module.

4. The automotive throttle valve controller according to claim 3, wherein The control end of the transmission switching module is grounded through the switching driving module, and the transmission driving module comprises a triode Q1 and a resistor R3, the collector of the triode Q1 is connected to the low-voltage end of the control end of the transmission switching module, the emitter of the triode Q1 is grounded through the resistor R3, and the base of the triode Q1 is the control end of the switching driving module.

5. The automotive throttle valve controller according to claim 4, wherein The emitter of the triode Q1 is the output end of the constant voltage supply circuit.

6. The automotive throttle valve controller according to claim 5, wherein The 12V output end of an automobile power supply is connected to the input end of a voltage reduction and stabilization chip, the voltage reduction and stabilization chip is the constant voltage supply circuit, and the output end of the voltage reduction and stabilization chip is the output end of the constant voltage supply circuit.

7. The automotive throttle valve controller according to claim 6, wherein ​

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