CN201141322Y - Partition lean combustion electric-controlled oil economizer of electro-jetting type petrol engine - Google Patents
Partition lean combustion electric-controlled oil economizer of electro-jetting type petrol engine Download PDFInfo
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- CN201141322Y CN201141322Y CNU2007203000441U CN200720300044U CN201141322Y CN 201141322 Y CN201141322 Y CN 201141322Y CN U2007203000441 U CNU2007203000441 U CN U2007203000441U CN 200720300044 U CN200720300044 U CN 200720300044U CN 201141322 Y CN201141322 Y CN 201141322Y
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- tonifying
- lean combustion
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- air compensation
- air
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Abstract
The utility model discloses a division lean combustion electric control fuel economizer of an electronic injection type gasoline engine, comprising an electronic control unit which controls the air compensation quality according to different operating conditions; the electronic control unit is connected with the engine rotating speed and choker position input signal; the output signal of the electronic control unit is connected with an open-close control device of the air compensation pipeline; the division lean combustion electric control fuel economizer is characterized in that the open-close control device of the air compensation pipeline is connected with the air compensation pipe and the air compensation nozzles of the air compensation pipe and an air compensation plate; the air compensation plate is connected between the carburetor choker and the main air inlet pipe of the engine. The air compensation plate ensures the oil gas to be mixed with the best air fuel ratio so that the good air compensation and adjusting effect under the complete operating condition is obtained; the quality of the mixed gas is improved; furthermore, the combustion is improved and the good effects of saving oil and reducing emission are obtained.
Description
Technical field
The utility model belongs to the motor car engine combustion control device, is specifically related to a kind of fuel oil EFI formula petrol engine subregion lean combustion electric control fuel economizer.
Background technique
Similar device for using the tonifying Qi behind carburetor throttle of electronic control system control air compensating system all has corresponding development both at home and abroad.But adopt the tonifying Qi behind fuel oil EFI formula petrol engine closure of electronic control system control air compensating system, it is still rare to readjust melting concn, in at present common fuel oil EFI formula petrol engine, normal employing air fuel ratio (λ) is about 1.0 the automatically controlled control system of closed loop, this system can make engine emission reach better, but starts oil consumption generally higher.A kind of Incylinder direct injection petrol engine (GDI) commonly used is to adopt in-cylinder injection to realize lean combustion, and its life-span and reliability are all relatively poor.The utility model has adopted that cylinder mixes outward, subregion becomes air-fuel ratio mixed gas method, has guaranteed petrol engine under various operating modes, remain on the lean combustion state when reaching maximum oil-saving effect, and engine emission and power character is unaffected.Adopt this subregion to become the thin burning electric controller of air fuel ratio, can obtain best coupling between motor Economy, power character and the discharging, improved the reliability of work.
Summary of the invention
The purpose of this utility model is to provide the better simply EFI formula of a kind of new structure petrol engine subregion lean combustion electric control fuel economizer, to address the above problem.
The technical solution of the utility model is: a kind of EFI formula petrol engine subregion lean combustion electric control fuel economizer, it comprises that one is used for controlling the electronic control unit of air compensation according to the different operating modes of starting, and electronic control unit connects engine speed and throttle position input signal; The output signal of electronic control unit connects tonifying Qi pipeline controller for opening and closing by control high frequency air solenoid valve or stepper motor, it is characterized in that the blowdown pipe that tonifying Qi pipeline controller for opening and closing connects, the gas filling mouth of blowdown pipe and tonifying Qi plate; The tonifying Qi plate is connected between throttle body and the engine intake manifold.
Establish at least one gas filling mouth on the described tonifying Qi plate, gas filling mouth stretches into tonifying Qi plate inner chamber, and front end is offered the otch of 45 degree, and cut-out direction is closure airflow direction dorsad.
Described gas filling mouth is arranged perpendicular to angle of cavity edge in tonifying Qi plate inner chamber edge placement or inclination and the tonifying Qi plate.
This device can make can both obtain best weak mixture when the arbitrary operating mode of motor, when guaranteeing that the engine underpressure burning obtains best fuel economy, controlled discharging (particularly NOX) and power performance again, obtained fuel-economizing and reduced the effect of discharging; This device is by mending air in certain amount in the intake manifold of electric control device behind throttle body, readjust the concentration of mixed gas, the mixed gas that is about to former closed loop control is by the optimal air-fuel ratio value in the pre-designed operating mode subregion, accurately regulate making motor reach best lean combustion state, improve burning.Electronic control unit handles the rotating speed speed and the information on load of motor as behind the instantaneous conditions, differentiate this operating mode and drop on which operating mode control zone, the principle of operating mode subregion is the rotating speed by motor, promptly high speed, middling speed, low speed and be high load, middle load, low-load by engine load are divided into experimental process operating mode zone with engine operation condition.Optimal air-fuel ratio (λ) in definite afterwards each the sub-operating mode zone of the emission performance of having taken all factors into consideration motor (particularly NOX), power performance, make its oil consumption reach minimum, finish the optimization of each sub-operating mode territory air fuel ratio one by one, finally obtain the optimal air-fuel ratio arteries and veins spectrum (MAP) of a full operating mode of motor, after it having been carried out corrections such as intake temperature, suction pressure, as the basic controlling MAP of electronic control system.In addition, motor has also been carried out corresponding processing at the control MAP of accelerating sections and braking section.The tonifying Qi plate guarantees with optimal air-fuel ratio oil gas to be mixed, and has obtained tonifying Qi regulating effect good under the full operating mode, has improved the quality of mixed gas, has further improved burning, has obtained good fuel-economizing and has reduced the effect of discharging.
Description of drawings
Fig. 1 EFI formula petrol engine subregion lean combustion electric control fuel economizer schematic representation.
Fig. 2 a～Fig. 2 b tonifying Qi plate structure schematic representation.
Fig. 3 electronic control unit schematic representation.
Embodiment
As shown in Figure 1, electronic control unit connects engine speed and throttle position input signal is that the signal of the speed probe that obtained by speed probe 1 and throttle position sensor 2 and throttle position sensor can directly drawing by former electric injection system; The output of speed probe 1 and throttle position sensor 2 is connected to electronic control unit (ECU); The output of electronic control unit (ECU) is connected to tonifying Qi pipeline controller for opening and closing, and tonifying Qi pipeline controller for opening and closing of the present utility model is solenoid electric valve 3 (or stepper motor); Solenoid electric valve 3 is located on the tonifying Qi pipeline 5; The input end that connects air inlet adjustment valve 11 air inlet adjustment valves on the tonifying Qi pipeline 5 links to each other with empty filter, also can link to each other with the empty filter of special use.Tonifying Qi pipeline 5 is connected with the gas filling mouth 7 of tonifying Qi plate 6.Tonifying Qi plate 6 is connected between throttle body 8 and motor 10 intake manifolds 9.Solenoid valve on the tonifying Qi pipeline is according to the engine displacement difference, can have one or morely, when adopting a plurality of solenoid valve, can directly electromagnetic valve outlet be connected with air intake branch of the engine.Each signaling line is connected with socket 21 by plug 20.Two solenoid electric valves are arranged in the present embodiment, and another is not looked.
Shown in Fig. 2 a, establish at least one gas filling mouth 7 on the tonifying Qi plate 6, (present embodiment adopts two gas filling mouths).Gas filling mouth 7 stretches into tonifying Qi plate 6 inner chambers, and front end is offered the otch 8 of 45 degree, and otch 8 directions are closure airflow direction (Fig. 2 b) dorsad.Gas filling mouth 6 is arranged perpendicular to angle of cavity edge in tonifying Qi plate inner chamber edge placement or inclination and the tonifying Qi plate.When angle of cavity edge is arranged in adopting the tonifying Qi plate, can in the intake manifold, produce certain eddy current and strengthen the oil gas mixed effect.
As shown in Figure 3, it is the special circuit plate of core with the unit single-chip microcomputer that electronic control unit is one, and control circuit as shown in Figure 3.Circuit board is 8 general single-chip microcomputer U1, after voltage signal V0 the effect through amplify Q2 and A/D converter U4 relevant with load of throttle position sensor input, with this analog signal conversion digital quantity, is input to U1 and P1.6 pin.From the biography rapid pulse of motor speed transmission sensor towards signal Ti after pre-process circuit is done photoelectric conversion and paraphase and is handled, be transported to U1 and INTO pin and trigger and interrupt, carry out the calculating of engine speed by interrupt handling routine.Electronics control unit and solenoid valve use the power supply of the DC.12V power supply of vehicle.Used watchdog circuit U2, solved interference problem by reset mode.Single-chip microcomputer is main drive circuit from the P3.7 pin output switching value control signal of P3 mouth through U3, carries out power amplification rear driving solenoid valve, by the open and close of control electromagnetic valve, to realize the control to the air mass flow of the valve of flowing through.The P3.7 pin is exported corresponding signal.
When engine operation, in different operating modes, the air fuel ratio that obtain the best desired mixed gas of low oil consumption is different.Electronic control unit is when engine operation, the rotating speed of detection of engine and throttle position (load) signal constantly, to determine the residing instantaneous conditions of motor, and judge which sub-operating mode zone is this operating mode drop on, all there is the optimal air-fuel ratio of a correspondence to go into value for each sub-operating mode zone, it is to be regulated to intake manifold's tonifying Qi by the tonifying Qi plate by high-frequency electromagnetic valve (or stepper motor) to obtain, air compensation is to be controlled by the pulsewidth of solenoid valve, and the best pulsewidth when an operating mode by experiment measurements and calculations combine and obtain.
Characteristics of the present utility model are to adopt the outer mixed flow regime subregion of cylinder, and adaptability becomes the air-fuel ratio control System realizes the lean burn process of gasoline engine, has reached the oil that both greatly reduces engine Consumption has been controlled again the NOX discharging of engine and has been risen, and has guaranteed the power performance of starting, Improved the reliability of device work. The tonifying Qi mode has adopted special-purpose tonifying Qi guide plate, has installed The special gas filling mouth with corner cut has obtained tonifying Qi regulating effect good under the full operating mode, carries The high quality of gaseous mixture has further been improved burning, has obtained good fuel-economizing and has reduced row The effect of putting.
Claims (5)
1, a kind of EFI formula petrol engine subregion lean combustion electric control fuel economizer, it comprises an electronic control unit that is used for according to different operating mode control air compensations, electronic control unit connects engine speed and throttle position input signal; The output signal of electronic control unit connects tonifying Qi pipeline controller for opening and closing, it is characterized in that the blowdown pipe that tonifying Qi pipeline controller for opening and closing connects, and blowdown pipe is connected with the gas filling mouth of tonifying Qi plate; The tonifying Qi plate is connected between throttle body and the engine intake manifold.
2, EFI formula petrol engine subregion lean combustion electric control fuel economizer according to claim 1 is characterized in that establishing on the tonifying Qi plate at least one gas filling mouth, and gas filling mouth stretches into tonifying Qi plate inner chamber, and front end is offered otch, and cut-out direction is closure airflow direction dorsad.
3, EFI formula petrol engine subregion lean combustion electric control fuel economizer as claimed in claim 1 or 2 is characterized in that gas filling mouth arranges perpendicular to angle of cavity edge in tonifying Qi plate inner chamber edge placement or inclination and the tonifying Qi plate.
4, EFI formula petrol engine subregion lean combustion electric control fuel economizer according to claim 1 is characterized in that establishing a high-frequency electromagnetic valve or stepper motor in the tonifying Qi pipeline controller for opening and closing at least, sends into the air of filtering to the gas filling mouth of tonifying Qi plate.
5, EFI formula petrol engine subregion lean combustion electric control fuel economizer according to claim 1, the angle that it is characterized in that otch are 45 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203000441U CN201141322Y (en) | 2007-12-20 | 2007-12-20 | Partition lean combustion electric-controlled oil economizer of electro-jetting type petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007203000441U CN201141322Y (en) | 2007-12-20 | 2007-12-20 | Partition lean combustion electric-controlled oil economizer of electro-jetting type petrol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141322Y true CN201141322Y (en) | 2008-10-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007203000441U Expired - Fee Related CN201141322Y (en) | 2007-12-20 | 2007-12-20 | Partition lean combustion electric-controlled oil economizer of electro-jetting type petrol engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141322Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163346A (en) * | 2022-05-20 | 2022-10-11 | 潍柴动力股份有限公司 | Air supplementing method, device and equipment for engine cylinder and storage medium |
-
2007
- 2007-12-20 CN CNU2007203000441U patent/CN201141322Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115163346A (en) * | 2022-05-20 | 2022-10-11 | 潍柴动力股份有限公司 | Air supplementing method, device and equipment for engine cylinder and storage medium |
| CN115163346B (en) * | 2022-05-20 | 2024-04-16 | 潍柴动力股份有限公司 | Air supplementing method, device and equipment for engine cylinder and storage medium |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20101220 |