WO2019148533A1

WO2019148533A1 - Combustion-supporting oil-economizing device for gasoline engine and control method therefor

Info

Publication number: WO2019148533A1
Application number: PCT/CN2018/075966
Authority: WO
Inventors: 庄慧敏
Original assignee: 成都信息工程大学
Priority date: 2018-01-31
Filing date: 2018-02-09
Publication date: 2019-08-08
Also published as: CN108361116B; CN108361116A

Abstract

Provided is a combustion-supporting oil-economizing device for a gasoline engine. The device comprises: an air inlet filter screen (1) provided with a grid-type air inlet structure (11); a reinforcing support rod (10) fixed on the air inlet filter screen (1), used for reinforcing the air inlet filter screen (1) and being of a cross-shaped structure; a controller (6) fixed on the air inlet filter screen (1) and connected to a storage battery of a gasoline engine; an air inlet pipe (2), a first shock absorption corrugated pipe (3), an air filter (4), a second shock absorption corrugated pipe (5), an ozone generator (7) and a gas inlet manifold (8), wherein same are sequentially connected in the gas inlet direction of the gasoline engine; an MQ-series ozone sensor (9) provided on an inner wall of the gas inlet manifold (8) and connected to the controller (6); and an MQ-series carbon monoxide sensor connected to the controller (6) and used for detecting the content of carbon monoxide in tail gas. Further provided is a control method for the combustion-supporting oil-economizing device for a gasoline engine. The oil-economizing device has a simple structure. The control method for the oil-economizing device is simple and convenient to control.

Description

Gasoline engine combustion-supporting fuel-saving device and control method thereof

Technical field

The invention relates to the technical field of gasoline engine combustion research and development, in particular to a gasoline engine combustion-supporting fuel-saving device.

Background technique

With the introduction of the “Eleventh Five-Year Plan” for energy conservation and emission reduction, we will vigorously advocate the construction of a resource-saving and environment-friendly society, reduce pollutant emissions, and achieve sustainable economic development. In the discharge of pollutants, automobile exhaust pollution has become an important source of air pollution in China. With incomplete statistics, by the end of 2016, our vehicle ownership reached 295 million vehicles, and the initial emissions of automobile emissions were 44.725 million tons. Among them, carbon monoxide exceeded 80% of total vehicle emissions. The main cause of carbon monoxide production is fuel combustion. insufficient. Gasoline engines include piston cylinders, intake systems, exhaust systems, batteries, linkages, gas distribution systems, lubrication systems, and ignition systems. At present, gasoline-fueled vehicles are classified into natural inhalation and turbocharging according to the intake mode. Among them, natural inhalation is a form in which atmospheric pressure presses air into the combustion chamber without passing any supercharger. The naturally aspirated engine has the advantages of smooth power output and direct response, but the fuel economy is obviously not as good as that of a turbocharged engine, and the fuel combustion is relatively low. The same volume of fuel produces higher carbon monoxide than turbocharged. In addition, the turbine increase is a technique of driving an air compressor by using an exhaust gas generated by the operation of an internal combustion engine, and its main function is to increase the intake air amount of the engine, thereby increasing the power and torque of the engine. In the same displacement situation, the turbocharged engine increases the maximum power by more than 40%. However, the turbocharged engine adds turbocharged components, which increases the production and maintenance costs of the car, and the car turbocharger is at low speed. Stop running, turbocharged when the car reaches a certain speed. Driving on a congested city road, the speed of the car is generally low, the turbocharger does not work most of the time, and the turbocharged engine can not play a real role in reducing emissions.

Therefore, there is an urgent need to improve the existing gasoline engine, while reducing the production and maintenance costs of the automobile, greatly reducing the carbon monoxide emission, making the gasoline engine burn more fully, and at the same time, improving the output of the gasoline engine, and also being applicable to the low speed. Driving situation.

Summary of the invention

In view of the above insufficiency, an object of the present invention is to provide a gasoline engine combustion-supporting fuel-saving device and a control method thereof, which mainly solve the problem that the prior art cannot simultaneously meet production, maintenance costs and carbon monoxide emissions.

In order to achieve the above object, the technical solution adopted by the present invention is as follows:

A gasoline engine combustion-supporting fuel-saving device comprises an air inlet filter screen with a grid-type air inlet structure, a reinforcing support rod fixed on the air inlet filter net and used for reinforcement of the air inlet filter screen and having a cross-shaped structure, fixed in the inlet a controller connected to the battery of the gasoline engine and connected to the battery of the gasoline engine, the air inlet pipe, the first damper bellows, the air filter, the second damper bellows, the ozone generator and the air inlet which are sequentially connected along the intake direction of the gasoline engine a manifold, an MQ series ozone sensor disposed on the inner wall of the intake manifold and connected to the controller, and an MQ series carbon monoxide sensor connected to the controller for detecting the carbon monoxide content in the exhaust gas; the inlet and the inlet of the inlet duct The screen is connected and the outlet is connected to the first damper bellows; the air cleaner is a relatively double barrel filter structure; the positive power input of the ozone generator is connected to the battery of the gasoline engine and the negative power input is connected to the controller .

Specifically, the air cleaner includes a first barrel type filter connected to the first damper bellows, a second barrel type filter connected to the second damper bellows, and a first barrel type filter A filter mesh between the net and the second barrel type filter and having a cylindrical shape.

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

Further, the controller includes an 8-bit enhanced 8051 single-chip microcomputer respectively connected to the carbon monoxide sensor and the ozone sensor, and is respectively connected to the power supply input terminal VCC of the single-chip microcomputer, the positive power input terminal V+ of the carbon monoxide sensor, and the power input terminal Vin of the ozone sensor. a DC power conversion circuit, and an alarm circuit, an ozone generating driving circuit and a clock crystal oscillator circuit respectively connected to the single chip microcomputer; the negative power source input end of the carbon monoxide sensor is grounded and the digital signal input end Do is connected with a current limiting resistor R2, the limit One end of the flow circuit R2 is connected to the digital signal input terminal Do of the carbon monoxide sensor and the other end is connected to the serial port P1.1 of the single chip microcomputer; the ground terminal GND of the ozone sensor is grounded and the current signal input terminal Do is connected with a current limiting resistor R3. One end of the current limiting resistor R3 is connected to the digital signal input terminal Do of the ozone sensor and the other end is connected to the serial port P1.5 of the single chip microcomputer; the ozone generating driving circuit is connected with the ozone generator; the external interrupt port of the single chip microcomputer P3.4 is connected with a current limiting device for receiving the ignition signal of the gasoline engine. R4.

Further, the alarm circuit includes a current limiting resistor R5 connected at one end to the serial port P0.3 of the single chip microcomputer, a base connected to the other end of the current limiting resistor R5 and having a grounded transistor VT1, and one end connected to the collector of the transistor VT1. And the other end is connected to the buzzer LS1 of the DC power conversion circuit output.

Further, the ozone generating driving circuit includes a FET connected to the serial port P2.6 of the single chip microcomputer, a drain connected to the negative power source of the ozone generator, and the source is grounded, and is connected to the field effect transistor. A voltage dividing resistor R6 between the gate and source of VT2.

Further, the DC power conversion circuit includes a power conversion chip U1 whose power input terminal Vin is connected to the battery of the gasoline engine and whose ground terminal GND is grounded, and is connected in parallel between the power input terminal Vin of the power conversion chip U1 and the ground GND. The charging capacitor C1 and the charging capacitor C2, and the charging capacitor C3, the charging capacitor C4 and the voltage stabilizing resistor R1 connected in parallel between the output terminal Vout of the power conversion chip U1 and the ground GND; the output end of the power conversion chip U1 Vout is connected to the buzzer LS1, the single-chip power input VCC, the positive power input V+ of the carbon monoxide sensor, and the power input Vin of the ozone sensor.

Further, the clock crystal oscillator circuit comprises a crystal oscillator Y1 connected between the reverse oscillation amplification input XTAL1 and the reverse oscillation output XTAL2 of the single chip microcomputer, and one end is connected between the reverse oscillation amplification input XTAL1 of the single chip microcomputer and the crystal oscillator Y1 and the other end A grounded charging capacitor C6, and a charging capacitor C5 connected at one end to the reverse oscillation output XTAL2 of the microcontroller and the crystal oscillator Y1 and grounded at the other end.

A control method for a gasoline engine combustion-supporting fuel-saving device comprises the following steps:

In step S01, the single chip acquires the ignition signal of the gasoline engine through the external interrupt port P3.4, and waits for the time T to execute step S02.

Step S02, the single chip receives the first digital signal corresponding to the current carbon monoxide content of the carbon monoxide sensor, and determines the value of the first digital signal and the preset value of the carbon monoxide preset in the single chip; if the value of the first digital signal If the preset value is greater than carbon monoxide, the single chip sends a high level to the serial port P2.6, drives the FET VT2 to conduct, triggers the ozone generator to work, and performs step S03; otherwise, the single chip continues to receive the first digital signal, And determine the value of the first digital signal and the size of the preset value.

Step S03, the single chip receives the second digital signal corresponding to the current ozone content, and determines the value of the second digital signal and the preset value of the ozone content preset in the single chip; if the second digital signal If the value is less than the preset value of the ozone content, the single chip sends a high level to the serial port P0.3, and the driving transistor VT1 is turned on to realize the buzzer alarm; otherwise, the single chip continues to receive the second digital signal output by the ozone sensor, and The value of the second digital signal and the preset value of the ozone content are determined.

Preferably, in the step S01, the time T is 120 s.

Compared with the prior art, the present invention has the following beneficial effects:

(1) The air inlet filter screen of the ingenious grid-shaped structure of the invention, and the reinforcing support rod is arranged on the air inlet filter screen, which not only ensures the air volume and debris protection of the air inlet, but also makes the air inlet filter net more reliable, and can also be used as The fixed base of the controller, at the same time, the heat generated by the controller during operation is taken away by the air inlet, thereby eliminating the heat dissipating components of the controller. In addition, by setting the air filter of the double barrel filter structure, the impurities in the gasoline engine mixed gas are reduced, and the interference of the impurities on the ozone sensor is reduced, so that the detection is more accurate. Not only that, by adding an ozone generator, the oxygen in the air is converted into ozone, and in the same volume of air, the oxygen content is significantly increased, the gasoline combustion ratio is increased, and the gasoline is fully burned. In this way, neither the gasoline engine boosting equipment nor the output power of the gasoline engine can be ensured, and the carbon monoxide content in the exhaust gas can be reduced.

(2) The invention converts the direct current of the gasoline engine battery into a positive 5V by setting a direct current power conversion circuit, and is used for a carbon monoxide sensor, an ozone sensor, a single chip microcomputer and a buzzer, thereby eliminating the need for a newly-powered storage battery, thereby saving equipment input cost. . In addition, by setting the FET to drive the ozone generator, the operating voltage can reach several thousand volts due to the strong current carrying capacity of the FET. When the ozone generator is driven, the working voltage and current carrying requirements are met. At the same time, the added equipment of the present invention is inexpensive, has a significant energy saving effect, and can achieve good fuel economy.

(3) Moreover, the present invention connects the ignition signal of the gasoline engine to the controller and acts as an external interrupt signal of the single chip microcomputer, and the control flow is executed only when the gasoline engine is ignited, so that the controller is in a sleep state when the vehicle is stopped. , thereby reducing the energy consumption of the battery. Since the car needs to be fully heated for 1-2 minutes after the vehicle is in use, the fuel conversion efficiency of the car is low, and the ozone generator is not effective for starting the combustion. Therefore, the time of carbon monoxide collection is set to obtain more accurate carbon monoxide emission. The amount of the single-chip microcomputer starts the ozone generator according to the collected carbon monoxide content, and collects the ozone content in the air after passing through the ozone generator. When the amount of ozone generated is small, an alarm is given. Through the above scheme, it is not necessary to detect the vehicle speed of the vehicle, and in the low speed state, the combustion efficiency can be improved and the carbon monoxide emission can be reduced. In summary, the invention can realize reliable and real-time control and supervision, ensure reliable operation of the combustion-supporting fuel-saving device, and completely solve the problems that the conventional turbocharged engine can not work at low speed and high maintenance cost, so that the gasoline engine realizes real energy-saving reduction. Improve fuel economy.

DRAWINGS

Figure 1 is a schematic view of the structure of the present invention.

2 is a schematic view showing the structure of an air inlet filter of the present invention.

Figure 3 is a development view of a ceramic ozone generating sheet of an ozone generator.

Figure 4 is a schematic diagram of the controller of the present invention.

In the above figures, the names of the parts corresponding to the reference numerals are as follows:

1-Inlet air filter, 2-inlet air duct, 3-first shock-absorbing bellows, 4-air filter, 5-second shock-absorbing bellows, 6-controller, 7-ozone generator, 8 - Intake manifold, 9-ozone sensor, 10-reinforced support rod, 11-grid port, 41-first barrel filter, 42-filter screen, 43-second barrel filter, 71-ceramic ozone The piece is produced, 72-ceramic base.

Detailed ways

The invention is further illustrated by the following figures and embodiments, which include, but are not limited to, the following examples.

Example

As shown in FIG. 1 to FIG. 4, the present embodiment provides a gasoline engine combustion-supporting fuel-saving device, which can reduce carbon monoxide emission, realize energy saving and emission reduction, and save the cost of input and maintenance of turbocharged equipment. The combustion-supporting fuel-saving device comprises an air inlet filter screen 1 in the form of an air inlet with a grid-like opening 11 , a reinforcing support rod 10 fixed on the air inlet filter screen 1 and having a cruciform structure for the air inlet filter screen, a controller 6 fixed to the air inlet filter 1 and connected to the battery of the gasoline engine, one end of which is connected to the air inlet filter 1 and has a funnel-shaped intake pipe 2, and one end of which is connected to the other end of the intake pipe 2 a tube 3, an air cleaner 4 connected to the first damper bellows 3 and having a relatively double barrel filter structure, a second damper bellows 5 connected to the output of the air cleaner 4, and a second damper ripple The tube 5 is connected, an ozone generator 7 for converting oxygen in the air into ozone to increase the combustion ratio of the gasoline engine, an intake manifold 8 disposed at the outlet of the ozone generator 7, and disposed on the inner wall of the intake manifold 8 for detecting conversion After the air content of ozone in the air and the MQ-131 ozone sensor 9 connected to the controller 6, and the carbon monoxide sensor connected to the controller 6 for detecting the carbon monoxide content in the exhaust gas, the ozone generator 7 is additionally provided. Positive power input with gasoline engine Battery connection and the negative voltage input connected to the controller. The air cleaner 4 further includes a first barrel type filter 41 connected to the first damper bellows 3, a second barrel type filter screen 43 connected to the second damper bellows 5, and A filter screen 42 is formed between the one-barrel type filter screen 41 and the second barrel type filter screen 43 and has a cylindrical shape. By setting up triple filtration, it reduces impurities in the air and improves ozone conversion efficiency.

In the present embodiment, the controller 6 includes an 8-bit enhanced 8051 single-chip microcomputer respectively connected to the carbon monoxide sensor and the ozone sensor, respectively, and a power supply input terminal VCC of the single-chip power supply, a positive power input terminal V+ of the carbon monoxide sensor, and a power input terminal Vin of the ozone sensor. Connected DC power conversion circuit, and alarm circuit, ozone generation drive circuit and clock crystal circuit which are all connected to the single chip microcomputer. The negative input terminal of the carbon monoxide sensor is grounded and the digital signal input terminal Do is connected to a current limiting resistor R2. One end of the current limiting circuit R2 is connected to the digital signal input terminal Do of the carbon monoxide sensor and the other end is connected to the serial port P1 of the single chip microcomputer. 1 connection. The grounding terminal GND of the ozone sensor is grounded and the digital signal input terminal Do is connected to a current limiting resistor R3. One end of the current limiting resistor R3 is connected to the digital signal input terminal Do of the ozone sensor and the other end is connected with the serial port P1 of the single chip microcomputer. .5 connection. The external interrupt port P3.4 of the single chip microcomputer is connected with a current limiting resistor R4 for receiving the ignition signal of the gasoline engine.

At the same time, in order to obtain the detection reminding signal of the ozone conversion, the alarm circuit includes a current limiting resistor R5 connected at one end to the serial port P0.3 of the single chip microcomputer, and a triode having a base connected to the other end of the current limiting resistor R5 and having an emitter grounded. VT1, and a buzzer LS1 whose one end is connected to the collector of the transistor VT1 and the other end is connected to the output of the DC power conversion circuit. In addition, in the present embodiment, the ozone generating driving circuit includes a FET connected to the serial port P2.6 of the single chip microcomputer, a drain connected to the negative power source of the ozone generator, and the source is grounded, and a connection. A voltage dividing resistor R6 between the gate and the source of the FET VT2.

In order to reduce the input cost of the combustion-supporting fuel-saving device and reduce the maintenance work in the later period, the voltage of the 36V or 48V battery that is supplied with the gasoline engine is converted into 5V by setting the DC power conversion circuit. The DC power conversion circuit includes a power conversion chip U1 whose power input terminal Vin is connected to the battery of the gasoline engine and whose ground terminal GND is grounded, and is connected in parallel to the charging capacitor C1 between the power input terminal Vin of the power conversion chip U1 and the ground GND. The charging capacitor C2 and the charging capacitor C3, the charging capacitor C4 and the voltage stabilizing resistor R1 connected in parallel between the output terminal Vout of the power conversion chip U1 and the ground GND are connected in parallel. The output terminal Vout of the power conversion chip U1 is respectively connected to the buzzer LS1, the single chip power input terminal VCC, the positive power input terminal V+ of the carbon monoxide sensor, and the power input terminal Vin of the ozone sensor. In addition, the clock crystal oscillator circuit includes a crystal oscillator Y1 connected between the reverse oscillation amplification input XTAL1 and the reverse oscillation output XTAL2 of the single chip microcomputer, and one end is connected between the reverse oscillation amplification input XTAL1 of the single chip microcomputer and the crystal oscillator Y1, and the other end is grounded. The charging capacitor C6 has a charging capacitor C5 whose one end is connected between the reverse oscillation output XTAL2 of the single chip and the crystal oscillator Y1 and the other end is grounded.

Briefly explain the control process of the gasoline engine combustion-supporting fuel-saving device:

First, the MCU collects the ignition signal of the gasoline engine through the external interrupt port P3.4, and waits for 120s to perform the carbon monoxide content collection. Secondly, the single-chip microcomputer collects the content of carbon monoxide in the exhaust gas through a carbon monoxide sensor. The signal output by the sensor includes an analog signal and a digital signal. Here, the analog output terminal is suspended, and the digital signal is transmitted to the single-chip microcomputer, and the single-chip microcomputer determines whether the carbon monoxide content exceeds the startup. If the preset value of the ozone generator exceeds the preset value, the MCU sends a high level to the serial port P2.6, drives the FET of the IRF3205S to turn on the VT2, and the ozone generator works normally to realize the combustion assist function. If the signal collected by carbon monoxide does not exceed the preset value, then the MCU continues to perform the carbon monoxide content collection process, thus forming a closed loop of real-time detection of exhaust carbon monoxide. Finally, the ozone generator is started, and the single-chip microcomputer collects the ozone content through the ozone sensor, and is used for determining the working condition of the ozone generator. When the ozone generator is faulty, the single-chip microcomputer sends a high level to the serial port P0.3, and drives the triode VT1 guide. Pass, realize the buzzer reminder function.

The invention intelligently sets an ozone generator, converts oxygen in the air into ozone, increases the content in the same volume, makes the gasoline engine burn more fully, and does not need to add turbocharger equipment, and eliminates the investment of the turbocharger device. Maintenance costs, as well as the need to detect the speed of the car, the combustion-enhancing device is most effective in congested urban roads. In summary, the invention has the advantages of simple structure, simple control, excellent energy saving and emission reduction effects, and has high practical value and popularization value in the gasoline engine combustion-supporting research and development technology.

The above embodiments are merely preferred embodiments of the present invention, and are not intended to limit the scope of the present invention. However, any changes made by the design principles of the present invention and non-innovative work on the basis of the present invention should fall within the scope of protection of the present invention. within.

Claims

A gasoline engine combustion-supporting fuel-saving device, comprising: an air inlet filter screen (1) provided with a grid-type air inlet structure, fixed on the air inlet filter screen (1), and used for reinforcement of the air inlet filter screen a reinforcing support rod (10) of a cross-shaped structure, a controller (6) fixed to the air inlet filter (1) and connected to a battery of the gasoline engine, and an air inlet pipe (2), which are sequentially connected along the intake direction of the gasoline engine a damper bellows (3), an air cleaner (4), a second damper bellows (5), an ozone generator (7) and an intake manifold (8) are disposed on the inner wall of the intake manifold (8) And an MQ series ozone sensor (9) connected to the controller (6), and a carbon series sensor connected to the controller (6) for detecting the carbon monoxide content in the exhaust gas; the air inlet pipe (2) The inlet is connected to the inlet filter (1) and the outlet is connected to the first damper bellows (3); the air cleaner (4) is a relative double barrel filter structure; the ozone generator (7) The positive power input is connected to the battery of the gasoline engine and the negative power input is connected to the controller.
A gasoline engine combustion-supporting fuel-saving device according to claim 1, wherein said air cleaner (4) comprises a first barrel-type filter (41) connected to the first damper bellows (3), and a second barrel type filter (43) connected to the second damper bellows (5), and a cylindrical shape disposed between the first barrel type filter (41) and the second barrel type filter (43) Filter mesh (42).
The gasoline engine combustion-supporting fuel-saving device according to claim 1, wherein the carbon monoxide sensor is of the type MQ-7, and the ozone sensor (9) is of the type MQ-131.
The gasoline engine combustion-supporting fuel-saving device according to claim 3, wherein the controller (6) comprises an 8-bit enhanced 8051 single-chip microcomputer respectively connected to the carbon monoxide sensor and the ozone sensor, respectively, and the single-chip power supply input terminal VCC, a positive power source input terminal V+ of the carbon monoxide sensor and a DC power conversion circuit connected to the power input terminal Vin of the ozone sensor, and an alarm circuit, an ozone generating driving circuit and a clock crystal oscillator circuit respectively connected to the single chip microcomputer; and a negative power input terminal of the carbon monoxide sensor Grounding and digital signal input terminal Do is connected with a current limiting resistor R2. One end of the current limiting circuit R2 is connected to the digital signal input terminal Do of the carbon monoxide sensor and the other end is connected to the serial port P1.1 of the single chip; the grounding of the ozone sensor The terminal GND is grounded and the digital signal input terminal Do is connected to a current limiting resistor R3. One end of the current limiting resistor R3 is connected to the digital signal input terminal Do of the ozone sensor and the other end is connected to the serial port P1.5 of the single chip microcomputer; An ozone generating driving circuit is connected to the ozone generator (7); an external part of the single chip microcomputer P3.4 fracture limiting resistor R4 is connected for receiving the ignition signal gasoline.
The gasoline engine combustion-supporting fuel-saving device according to claim 4, wherein the alarm circuit comprises a current limiting resistor R5 connected at one end to the serial port P0.3 of the single-chip microcomputer, and the base is connected to the other end of the current limiting resistor R5 and is emitted. The pole-grounded transistor VT1 has a buzzer LS1 whose one end is connected to the collector of the transistor VT1 and whose other end is connected to the output of the DC power conversion circuit.
A gasoline engine combustion-supporting fuel-saving device according to claim 5, wherein said ozone generating driving circuit comprises a gate connected to a serial port P2.6 of the single chip microcomputer, a drain connected to a negative power source of the ozone generator, and a source The pole grounded FET VT2 and the voltage dividing resistor R6 connected between the gate and the source of the FET VT2.
The gasoline engine combustion-supporting fuel-saving device according to claim 6, wherein the DC power conversion circuit comprises a power conversion chip U1 connected to the battery of the gasoline engine and connected to the battery of the gasoline engine, and connected to the power conversion chip in parallel. a charging capacitor C1 and a charging capacitor C2 between the power input terminal Vin of the chip U1 and the ground GND, and a charging capacitor C3 and a charging capacitor C4 connected in parallel between the output terminal Vout of the power conversion chip U1 and the ground GND The voltage stabilizing resistor R1; the output terminal Vout of the power conversion chip U1 is respectively connected to the buzzer LS1, the single chip power input terminal VCC, the positive power input terminal V+ of the carbon monoxide sensor, and the power input terminal Vin of the ozone sensor.
The gasoline engine combustion-supporting fuel-saving device according to claim 4, wherein the clock crystal oscillator circuit comprises a crystal oscillator Y1 connected between the reverse oscillation amplification input XTAL1 and the reverse oscillation output XTAL2 of the single chip microcomputer, and one end is connected to the single chip microcomputer. The reverse oscillation amplifies the charging capacitor C6 input between the XTAL1 and the crystal oscillator Y1 and grounded at the other end, and the charging capacitor C5 whose one end is connected between the reverse oscillation output XTAL2 of the single chip and the crystal oscillator Y1 and the other end is grounded.
A control method for a gasoline engine combustion-supporting fuel-saving device according to claim 7, comprising the steps of:

Step S01, the single chip microcomputer collects the ignition signal of the gasoline engine through the external interrupt port P3.4, and waits for the time T, and then performs step S02;

Step S02, the single chip receives the first digital signal corresponding to the current carbon monoxide output output by the carbon monoxide sensor, and determines the value of the first digital signal and the preset value of the carbon monoxide preset in the single chip; if the first digital signal When the value is greater than the preset value of carbon monoxide, the single chip sends a high level to the serial port P2.6, drives the FET VT2 to conduct, triggers the ozone generator to work, and executes step S03; otherwise, the single chip continues to receive the first number Signal, and determine the value of the first digital signal and the size of the preset value;

Step S03, the single-chip microcomputer receives the second digital signal corresponding to the current ozone content output by the ozone sensor, and determines the value of the second digital signal and the preset value of the ozone content preset in the single-chip microcomputer; if the second digital signal If the value is less than the preset value of the ozone content, the single chip sends a high level to the serial port P0.3, and the driving transistor VT1 is turned on to realize the buzzer alarm; otherwise, the single chip continues to receive the second digital signal output by the ozone sensor, And determining the value of the second digital signal and the preset value of the ozone content.
The control method according to claim 9, wherein in the step S01, the time T is 120 s.