CN207989153U - Control circuit for gasoline engine combustion-supporting and oil-saving device - Google Patents

Abstract

The utility model discloses a kind of control circuits for gasoline engine combustion-supporting and oil-saving device, include 8 enhanced 8051 microcontrollers, the ozone sensor of MQ series for being arranged in inlet manifold and being connect with microcontroller, it is connect with microcontroller, carbon monoxide transducer for detecting carbon monoxide content in gasoline tail gas, respectively with microcontroller power supply input terminal VCC, the direct-current power supply converting circuit that the cathode power supply input terminal V+ of carbon monoxide transducer is connected with the power input Vin of ozone sensor, and the warning circuit being connect with microcontroller, driving circuit and clock crystal oscillator circuit occur for ozone.Through the above scheme, the utility model has many advantages, such as that simple in structure, control is easy, equipment input cost is cheap, has very high practical value and promotional value in the combustion-supporting research and development technology of gasoline engine.

Description

Control circuit for gasoline engine combustion-supporting and oil-saving device

Technical field

The utility model is related to the combustion-supporting research and development technology fields of gasoline engine, in particular for the control of gasoline engine combustion-supporting and oil-saving device Circuit processed.

Background technology

With the proposition of Eleventh Five-Year Plan energy-saving and emission-reduction, Resources for construction economizing type, environmentally friendly society are vigorously advocated, is dropped Sustainable economic development are realized in the discharge of low stain object.In pollutant emission, automobile exhaust pollution has become China's air The important sources of pollution.According to incompletely statistics, ended for the end of the year 2016, our vehicle guaranteeding organic quantities reach 2.95 hundred million, automobile row It is 4472.5 ten thousand tons to put pollutant initial estimate, wherein carbon monoxide is more than the 80% of vehicle mass exhaust total quantity, generates carbon monoxide The main reason for be fuel oil burning it is insufficient.Gasoline engine includes piston oil-cylinder, gas handling system, exhaust system, accumulator, connecting rod machine Structure, air distribution system, lubricating system and ignition system etc..It is inhaled currently, gasoline-fueled automobile is divided into nature by intake method Gas and turbocharging, wherein natural aspiration is in the case of not by any booster, and air is pressed into combustion chamber by atmospheric pressure A kind of form, naturally aspirated engine the advantage is that power output smooth-going, response are direct, but fuel economy is obviously not Such as turbo charged engine, and fuel oil burning is relatively low, and the carbon monoxide of the fuel generation of same volume is compared with turbocharging It is high.In addition, turbine increase is a kind of technology of the exhaust gas drive air compressor generated using internal combustion engine operation, main function It is to improve air input of engine by air, to improve the power and torque of engine.In same displacement, turbocharged engine Promoted 40% or more maximum power, still, turbo charged engine is additionally arranged turbocharging component, increase automobile production, Maintenance cost, and automobile turbocharger is in run-stopping status, when automobile reaches certain speed, turbine in low speed Supercharging just works.It is travelled in the urban road of congestion, automobile speed is generally relatively low, turbocharging overwhelming majority times not work Make, turbo charged engine can not also play the role of real emission reduction.

Control unit of the control circuit as combustion-supporting and oil-saving device, main function are detection carbon monoxide, ozone content, are driven Dynamic ozone generator and buzzer currently, market is not directed to the control circuit of gasoline engine combustion-supporting and oil-saving device, therefore are badly in need of wanting It is proposed a kind of control circuit for gasoline engine combustion-supporting and oil-saving device.By the way that the control circuit is arranged, automobile production, dimension are being reduced While protecting cost, CO emission is substantially reduced, keeps petrol engine combustion more abundant, at the same time, can also improve gasoline Machine output power, and the case where also can be suitably used for running at a low speed.Wherein, which includes that air inlet is filtered Net, blast pipe, the first damping bellows, air cleaner, the second damping bellows, ozone generator and inlet manifold.

Utility model content

Place against the above deficiency, the purpose of this utility model is to provide a kind of for gasoline engine combustion-supporting and oil-saving device Control circuit.

To achieve the goals above, the technical solution adopted in the utility model is as follows：

For the control circuit of gasoline engine combustion-supporting and oil-saving device, include 8 enhanced 8051 microcontrollers, is arranged in air inlet The ozone sensor for the MQ series connecting in manifold and with microcontroller, connect with microcontroller, for detecting in gasoline tail gas The carbon monoxide transducer of carbon monoxide content, it is electric with the anode of microcontroller power supply input terminal VCC, carbon monoxide transducer respectively The direct-current power supply converting circuit that source input terminal V+ is connected with the power input Vin of ozone sensor, and connect with microcontroller Driving circuit and clock crystal oscillator circuit occur for warning circuit, the ozone connect.The negative power supply of the carbon monoxide transducer inputs End is grounded and digital signal input end Do is connected to a current-limiting resistance R2, the one end the current-limiting circuit R2 and carbon monoxide transducer Digital signal input end Do connections and the other end connect with serial port of single chip computer P1.1.The ground terminal of the ozone sensor GND is grounded and digital signal input end Do is connected to a current-limiting resistance R3, one end of the current-limiting resistance R3 and ozone sensor Digital signal input end Do connections and the other end and microcontroller serial port P1.5 connections.Driving circuit occurs for the ozone It is connect with ozone generator, the external interrupt mouth P3.4 of the microcontroller is connected with the current limliting for receiving gasoline engine ignition signal Resistance R4.

Further, the warning circuit includes the current-limiting resistance R5 that one end is connect with serial port of single chip computer P0.3, base stage It is connect with the current-limiting resistance R5 other ends and the triode VT1 of emitter ground connection and one end is connect with triode VT1 collectors And the buzzer LS1 of the other end and direct-current power supply converting circuit output connection.

Further, the ozone occur serial port P2.6 connections, drain electrode that driving circuit includes grid and microcontroller and The negative power supply input connection of ozone generator and the field-effect tube VT2 of source electrode ground connection, and it is connected to field-effect tube VT2's Divider resistance R6 between grid and source electrode.

Preferably, the direct-current power supply converting circuit include power input Vin and gasoline engine accumulator connection and The power conversion chip U1 of ground terminal GND ground connection is connected to power input Vin and the ground connection of power conversion chip U1 after in parallel The output end vo ut of power conversion chip U1 is connected to after charging capacitor C1 and charging capacitor C2 and parallel connection between the GND of end Charging capacitor C3, charging capacitor C4 between ground terminal GND and voltage regulation resistance R1.The output end of the power conversion chip U1 Vout respectively with buzzer LS1, microcontroller power supply input terminal VCC, the cathode power supply input terminal V+ of carbon monoxide transducer and smelly The power input Vin connections of lambda sensor.

Further, the clock crystal oscillator circuit include be connected to the reversed oscillation amplification input XTAL1 of microcontroller with it is anti- Export the crystal oscillator Y1 between XTAL2 to oscillation, one end be connected to microcontroller reversed oscillation amplification input XTAL1 and crystal oscillator Y1 it Between and other end ground connection charging capacitor C6 and one end be connected to the reversed oscillation of microcontroller and export XTAL2 and crystal oscillator Y1 Between and the other end ground connection charging capacitor C5.

Preferably, the model MQ-7 of the carbon monoxide transducer, the model MQ-131 of the ozone sensor.

Compared with prior art, the utility model has the advantages that：

(1) control unit of the utility model as gasoline engine combustion-supporting and oil-saving device converts electricity by the way that DC power supply is arranged The direct current of gasoline engine 36V or 48V accumulator is converted into positive 5V by road, for for carbon monoxide transducer, ozone sensor, Microcontroller and buzzer use, without the accumulator of newly-increased power supply, to save equipment input cost.In addition, passing through setting Field-effect tube drives ozone generator, and since the current-carrying capability of field-effect tube is strong, operating voltage is up to several kilovolts, in driving ozone When generator, meet operating voltage, current-carrying requirement.At the same time, the equipment price that the utility model is added is cheap, energy-saving and emission-reduction It is with obvious effects, and good fuel economy can be reached.

(3) moreover, the utility model is by gasoline engine ignition signal access controller, and as in the outside of microcontroller Break signal just executes control flow when, gasoline engine ignition, thus, which controller is in suspend mode shape in parking State, and then reduce the energy consumption of accumulator.Since automobile needs abundant hot vehicle 1~2 minute after vehicle, at this point, vehicle fuel turns Less efficient, startup ozone generator progress combustion-supporting effect unobvious are changed, therefore set the time of carbon monoxide acquisition, to obtain Accurate CO emission, microcontroller carries out startup ozone generator according to the carbon monoxide content of acquisition, and adopts Collect the ozone content in the air after ozone generator, when the amount that ozone generates is less, gives alarm.By above-mentioned Scheme in lower-speed state, can also improve efficiency of combustion, reduce the discharge of carbon monoxide without detecting the speed of running car. In addition, reliable, real-time control supervision can also be realized, ensure combustion-supporting and oil-saving device reliability service, and can also thoroughly solve to pass System turbocharged engine low speed can not work the problems such as high with maintenance cost, and gasoline engine is made to realize real energy-saving and emission-reduction, carry High fuel economy.

Description of the drawings

Fig. 1 is the structural schematic diagram of the utility model.

Specific implementation mode

The utility model is described in further detail with reference to the accompanying drawings and examples, and the embodiment of the utility model includes But it is not limited to the following example.

Embodiment

As shown in Figure 1, this implementation provides a kind of control circuit for gasoline engine combustion-supporting and oil-saving device, including The microcontroller of STC12C5A60S2, the ozone sensor of MQ-131 for being arranged in inlet manifold and being connect with microcontroller, with Microcontroller connection, the MQ-7 carbon monoxide transducers for detecting carbon monoxide content in gasoline tail gas, respectively with microcontroller Power input VCC, the cathode power supply input terminal V+ of carbon monoxide transducer are connected with the power input Vin of ozone sensor Direct-current power supply converting circuit, and connect with microcontroller warning circuit, ozone occur driving circuit and clock crystal oscillator electricity Road.The negative power supply input end grounding and digital signal input end Do of carbon monoxide transducer pass through current-limiting resistance R2 and monolithic Machine serial port P1.1 connections, in addition, the ground terminal GND of the ozone sensor is grounded and digital signal input end Do passes through limit The serial port P1.5 connections of leakage resistance R3 and microcontroller, the ozone occur driving circuit and are connect with ozone generator, the list The external interrupt mouth P3.4 of piece machine is connected with the current-limiting resistance R4 for receiving gasoline engine ignition signal.Wherein, clock crystal oscillator electricity Road includes the crystal oscillator Y1 being connected between the reversed oscillation amplification input XTAL1 of microcontroller and reversed oscillation output XTAL2, one end It is connected to the charging capacitor C6 that between the reversed oscillation amplification input XTAL1 and crystal oscillator Y1 of microcontroller and the other end is grounded, with And one end is connected between the reversed oscillation output XTAL2 and crystal oscillator Y1 of microcontroller and the charging capacitor C5 of other end ground connection.

At the same time, in order to obtain the detection alerting signal of ozone conversion, the warning circuit includes one end and microcontroller The current-limiting resistance R5 of serial port P0.3 connections, base stage is connect with the current-limiting resistance R5 other ends and the triode of emitter ground connection VT1 and one end are connect with triode VT1 collectors and the buzzer of the other end and direct-current power supply converting circuit output connection LS1.In addition, in this embodiment, the serial port P2.6 connections that driving circuit includes grid and microcontroller, drain electrode occur for the ozone The field-effect tube VT2 of negative power supply input connection and source electrode ground connection with ozone generator, and it is connected to field-effect tube VT2 Grid and source electrode between divider resistance R6.

In order to reduce combustion-supporting and oil-saving device input cost, later maintenance workload is reduced, is converted by the way that DC power supply is arranged The voltage for the 36V or 48V accumulators that gasoline engine carries is converted into 5V by circuit.The direct-current power supply converting circuit includes that power supply is defeated Enter to hold the power conversion chip U1 that the accumulator of Vin and gasoline engine connects and ground terminal GND is grounded, power supply is connected to after in parallel Connect after charging capacitor C1 and charging capacitor C2 and parallel connection between the power input Vin and ground terminal GND of conversion chip U1 The charging capacitor C3, the charging capacitor C4 that are connected between the output end vo ut of power conversion chip U1 and ground terminal GND and voltage stabilizing electricity Hinder R1.The output end vo ut of the power conversion chip U1 is aoxidized with buzzer LS1, microcontroller power supply input terminal VCC, one respectively The cathode power supply input terminal V+ of carbon sensor is connected with the power input Vin of ozone sensor.

Briefly explain the workflow of the control circuit：

First, microcontroller acquires the ignition signal of gasoline engine by external interrupt mouth P3.4, and is held after stand-by period 120s Row carbon monoxide content acquires.Secondly, microcontroller acquires the content of carbon monoxide in tail gas, the biography by carbon monoxide transducer The signal of sensor output includes analog signal and digital signal, here, simulation output end is hanging, by digital data transmission to monolithic Machine, by microcontroller judgement, whether carbon monoxide content is more than the preset value for starting ozone generator at this time, if being more than preset value, Then serially mouth P2.6 issues high level to microcontroller, drives the field-effect tube of IRF3205S that VT2, the normal work of ozone generator is connected Make, realizes combustion aid function.If fruit is said, the signal of carbon monoxide acquisition is simultaneously less than preset value, that microcontroller continues to execute one Content of carbon oxide gatherer process, in this way, the closed loop that tail gas carbon monoxide detects in real time just can be formed.Finally, ozone generator opens It is dynamic, and microcontroller acquires ozone content by ozone sensor, for judging ozone generator working condition, when ozone occurs When device failure, serially mouth P0.3 issues high level to microcontroller, and buzzing prompting function is realized in the VT1 conductings of driving triode.To sum up Described, the utility model has many advantages, such as that simple in structure, control is easy, equipment input cost is cheap, in the combustion-supporting research and development of gasoline engine Technology has very high practical value and promotional value.

Above-described embodiment is only the preferred embodiment of the utility model, is not intended to limit the scope of the present invention, In every case using the design principle of the utility model, and the non-creative variation worked and made is carried out on this basis, it should all Belong within the scope of protection of the utility model.

Claims (6)

1. the control circuit for gasoline engine combustion-supporting and oil-saving device, which is characterized in that include 8 enhanced 8051 microcontrollers, The ozone sensor of MQ series for being arranged in inlet manifold and being connect with microcontroller, connect with microcontroller, for detecting vapour The carbon monoxide transducer of carbon monoxide content in oil machine tail gas is sensed with microcontroller power supply input terminal VCC, carbon monoxide respectively The direct-current power supply converting circuit that the cathode power supply input terminal V+ of device is connected with the power input Vin of ozone sensor, Yi Jijun Driving circuit and clock crystal oscillator circuit occur for warning circuit, the ozone being connect with microcontroller；The carbon monoxide transducer is born Pole power input is grounded and digital signal input end Do is connected to a current-limiting resistance R2, the one end the current-limiting circuit R2 and an oxygen The digital signal input end Do connections and the other end for changing carbon sensor are connect with serial port of single chip computer P1.1；The ozone sensing The ground terminal GND ground connection of device and digital signal input end Do are connected to a current-limiting resistance R3, one end of the current-limiting resistance R3 with The digital signal input end Do connections of ozone sensor and the serial port P1.5 connections of the other end and microcontroller；The ozone hair Raw driving circuit is connect with ozone generator；The external interrupt mouth P3.4 of the microcontroller is connected with for receiving gasoline engine ignition The current-limiting resistance R4 of signal.

2. control circuit according to claim 1, which is characterized in that the warning circuit includes that one end and microcontroller are serial The current-limiting resistance R5 of mouth P0.3 connections, base stage is connect with the current-limiting resistance R5 other ends and the triode VT1 of emitter ground connection, with And one end is connect with triode VT1 collectors and the buzzer LS1 of the other end and direct-current power supply converting circuit output connection.

3. control circuit according to claim 2, which is characterized in that it includes grid and list that driving circuit, which occurs, for the ozone The field-effect tube that negative power supply input connection and source electrode of the serial port P2.6 connections, drain electrode of piece machine with ozone generator are grounded VT2, and the divider resistance R6 that is connected between the grid and source electrode of field-effect tube VT2.

4. control circuit according to claim 3, which is characterized in that the direct-current power supply converting circuit includes power input The power conversion chip U1 for holding the connection of the accumulator of Vin and gasoline engine and ground terminal GND ground connection, is connected to power supply and turns after in parallel It the charging capacitor C1 changed between the power input Vin of chip U1 and ground terminal GND and is connected after charging capacitor C2 and parallel connection Charging capacitor C3, charging capacitor C4 and voltage regulation resistance between the output end vo ut and ground terminal GND of power conversion chip U1 R1；The output end vo ut of the power conversion chip U1 respectively with buzzer LS1, microcontroller power supply input terminal VCC, carbon monoxide The cathode power supply input terminal V+ of sensor is connected with the power input Vin of ozone sensor.

5. control circuit according to claim 1, which is characterized in that the clock crystal oscillator circuit includes being connected to microcontroller Reversed oscillation amplification input XTAL1 and reversed oscillation output XTAL2 between crystal oscillator Y1, one end is connected to the reversed of microcontroller Between the oscillation amplification input XTAL1 and crystal oscillator Y1 and charging capacitor C6 of other end ground connection and one end is connected to microcontroller Reversed oscillation output XTAL2 and crystal oscillator Y1 between and other end ground connection charging capacitor C5.

6. control circuit according to claim 1, which is characterized in that the model MQ-7 of the carbon monoxide transducer, The model MQ-131 of the ozone sensor.