CN204126743U - Petrol engine air admission pressure electronic control system - Google Patents
Petrol engine air admission pressure electronic control system Download PDFInfo
- Publication number
- CN204126743U CN204126743U CN201420603116.XU CN201420603116U CN204126743U CN 204126743 U CN204126743 U CN 204126743U CN 201420603116 U CN201420603116 U CN 201420603116U CN 204126743 U CN204126743 U CN 204126743U
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- Prior art keywords
- petrol engine
- air
- air inlet
- control valve
- auxiliary port
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The utility model discloses a kind of petrol engine air admission pressure electronic control system, comprise the Carburetor with main airway, idling air flue and at least one auxiliary port, auxiliary port is provided with air intake control valve; Also comprise the temperature transducer for detecting the cylinder temperature of petrol engine, for oxygen content in the exhaust of petrol engine is detected lambda sensor, for the pulse trigger that detects the rotating speed of petrol engine and the controller for controlling according to air inlet opportunity and the duration of signal to air intake control valve of temperature transducer, lambda sensor, pulse trigger collection.The utility model is by gathering oxygen content signal and petrol engine rotational speed signal, through judging and calculating, at the intake stroke of petrol engine, synchronization control is carried out to air inlet opportunity of auxiliary port " air intake control valve " and air inlet duration, accurately can control the air inflow of auxiliary port, and then realize the air-intake negative-pressure accurately controlling main airway, reach the object accurately controlling air fuel ratio.
Description
Technical field
The utility model relates to petrol engine air admission pressure electronic control system, specifically relate to a kind of can synchronous accurate positioning, intelligent control air fuel ratio petrol engine air admission pressure electronic control system, effectively to meet Euro IV Emission Standards.
Background technique
At present, the suction pressure electronic control system of motorcycle gasoline engine adopts carburetor circuit usually, and carburetor circuit is equivalent to control fuel injection quantity with analog form, and its air-fuel ration control precision is not high, HC and CO severe overweight in tail gas.And generally can only make reasonable control for typical several operating mode, and due to can not feedback control be done, the adjustment of Carburetor can not contain the scattered error of product self, and during the changes such as product natural aging causes nozzle opening to wear and tear, trace blocking, it can not carry out oneself correction, and discharge worsens further.
The motorcycle gasoline engine ELECTRONIC CONTROLLED CARBURETOR SYSTEM occurred in recent years utilizes duty solenoids adjusting air-fuel ratio, and the defect such as the precision that compensate for electronic controlled carburetor is to a certain extent low, conformity is poor, reduces the discharge of waste gas.But because the open and close of this scheme duty solenoids and bent axle can not Complete Synchronizations, limit the further raising of air fuel ratio precision.
Summary of the invention
In order to solve the problems of the technologies described above, the utility model proposes a kind of petrol engine air admission pressure electronic control system, controller (ECU) gathers oxygen content signal by lambda sensor and gathers petrol engine rotational speed signal by pulse trigger, through judging and calculating, at the intake stroke of petrol engine, synchronization control is carried out to air inlet opportunity of auxiliary port " air intake control valve " and air inlet duration, accurately can control the air inflow of auxiliary port, and then realize the air-intake negative-pressure accurately controlling main airway, reach the object accurately controlling air fuel ratio.
The technical solution of the utility model is achieved in that
A kind of petrol engine air admission pressure electronic control system, comprise the Carburetor with main airway, idling air flue and at least one auxiliary port, described auxiliary port is provided with air intake control valve; The lambda sensor also comprise the temperature transducer for detecting the cylinder temperature of described petrol engine, detecting for oxygen content in the exhaust to described petrol engine, for the pulse trigger that detects the rotating speed of described petrol engine and the controller for controlling the air inlet opportunity of described air intake control valve and air inlet duration according to the signal of described temperature transducer, lambda sensor, pulse trigger collection.
As further improvement of the utility model, described air intake control valve is the high-speed electromagnetic valve controlling air inlet opportunity and air inlet duration at the intake stroke of described petrol engine.
The beneficial effects of the utility model are: the utility model provides a kind of petrol engine air admission pressure electronic control system, wherein, controller passes through lambda sensor, temperature transducer, pulse trigger can gather the oxygen concentration in petrol engine exhaust, cylinder temperature and petrol engine rotational speed, according to the driving states that these signals are determined, ECU is through judging and calculating, at the intake stroke of petrol engine, can to unlatching timely progress row on the opportunity synchronization control of the air intake control valve of auxiliary port, thus accurately can control the air inflow of auxiliary port, and then realize the air-intake negative-pressure accurately controlling main airway, reach the object of the air fuel ratio accurately controlling petrol engine.In said structure, adopt lambda sensor as the feedback signal of suction pressure electronic control system, the feedback control of air-intake negative-pressure can be realized, make air fuel ratio dynamic adjustments near optimum value, effectively eliminate the performance impact that Carburetor conformity difference is brought.Petrol engine rotational speed signal is gathered by pulse trigger, and adopt the rear edge of trigger impulse to realize the unlatching of air intake control valve and the Complete Synchronization of bent axle, reach air-intake negative-pressure during synchronization regulation petrol engine air admission stroke, and then reach the synchronous object accurately controlling air fuel ratio.
Accompanying drawing explanation
Fig. 1 is the utility model petrol engine air admission pressure electronic control system working principle schematic diagram;
Fig. 2 is the utility model middle controller block diagram;
When Fig. 3 is petrol engine operation, air inlet state of a control transition diagram;
When Fig. 4 is petrol engine operation, air inlet Closed control sequential chart.
By reference to the accompanying drawings, make the following instructions:
1---oiling device 101---main airway
102---idling air flue 103---auxiliary port
104---air intake control valve 2---temperature transducer
3---lambda sensor 4---pulse trigger
5---controller 6---throttle position sensor
7---outlet pipe 8---cylinder body
9---throttle valve switch 10---flywheel
11---LED light 12---spark plug
Embodiment
As depicted in figs. 1 and 2, a kind of petrol engine air admission pressure electronic control system, comprise the Carburetor 1 with main airway 101, idling air flue 102 and at least one auxiliary port 103, described auxiliary port is provided with air intake control valve 104; The lambda sensor 3 also comprise the temperature transducer 2 for detecting the cylinder temperature of described petrol engine, detecting for oxygen content in the exhaust to described petrol engine, for the pulse trigger 4 that detects the rotating speed of described petrol engine and the controller 5 for controlling the air inlet opportunity of described air intake control valve and air inlet duration according to the signal of described temperature transducer, lambda sensor, pulse trigger collection.Controller (ECU) block diagram is see Fig. 2, wherein, for the cylinder temperature of petrol engine is detected temperature transducer 2, for oxygen content in the exhaust of petrol engine is detected lambda sensor 3, be electrically connected with the input end of controller respectively for the pulse trigger 4 detected the rotating speed of petrol engine, be used to indicate the LED light 11 of working state, air intake control valve 104 on the spark plug 12 of lighting a fire and auxiliary port be electrically connected with the output terminal of controller respectively.
Preferably, described air intake control valve is the high-speed electromagnetic valve controlling air inlet opportunity and air inlet duration at the intake stroke of described petrol engine.
Preferably, described lambda sensor is installed on the outlet pipe 7 of described petrol engine near cylinder head place, and described temperature transducer is installed on the cylinder body 8 of described petrol engine.
Preferably, petrol engine air admission pressure electronic control system also comprises throttle position sensor 6 (TPS) for detecting the operating mode of described petrol engine or throttle valve switch 9, and throttle position sensor 6 (TPS) or throttle valve switch 9 are electrically connected with the input end of controller.
A synchronous accuracy control method for petrol engine air admission pressure electronic control system, comprises the steps:
1) the air inlet control MAP obtained by car load working condition tests is written with in described controller in advance, described air inlet control MAP adopts petrol engine rotational speed signal, oxygen content signal, temperature signal to be independent variable, adopts air intake control valve air inlet opportunity and air inlet duration to be dependent variable;
2) described lambda sensor oxygen content in the exhaust of described petrol engine is detected and by oxygen content Signal transmissions give described controller; The rotating speed of described pulse trigger to described petrol engine detect and by petrol engine rotational speed Signal transmissions give described controller;
3) in the intake stroke stage, described controller is according to the petrol engine rotational speed signal collected in step 2, obtain air inlet opportunity and the air inlet duration of described air intake control valve to described air inlet control MAP, and described controller controls the unlatching of described air intake control valve once;
4) in the intake stroke stage, described controller, according to the oxygen content signal collected in step 2, adjusts the unlatching duration of described air intake control valve; When the oxygen content signal collected is dense, increase the unlatching duration of described air intake control valve, when collecting oxygen content signal and being rare, reduce the unlatching duration of described air intake control valve.
Preferably, in petrol engine using process, described controller, according to the petrol engine rotational speed signal gathered and oxygen content signal, carries out self study by Correction and Control logic to air inlet control MAP, implements the self adaption to Carburetor conformity or performance degradation.
It is as follows that the utility model petrol engine air admission pressure electronic control system carries out the principle that air fuel ratio synchronously accurately controls:
In ECU, demarcate the air inlet control MAP obtained by car load working condition tests in advance, air inlet control MAP adopts petrol engine rotational speed signal, oxygen content signal and temperature signal to be independent variable, adopts air intake control valve air inlet opportunity and air inlet duration to be dependent variable.
After ECU judges that lambda sensor is activated, ECU, according to the activate state of petrol engine state, cylinder temperature and lambda sensor, judges to enter the opportunity that air inlet controls adjustment air fuel ratio.
After entering air inlet control adjustment air fuel ratio, the cylinder temperature of temperature transducer to petrol engine detects and temperature signal is transferred to ECU; Lambda sensor detects oxygen content in the exhaust of petrol engine and by oxygen content Signal transmissions to ECU; Pulse trigger detects petrol engine rotational speed and by petrol engine rotational speed Signal transmissions to ECU, is specially pulse trigger by gathering the rotating speed determination petrol engine rotational speed of gasoline engine flywheel 10; In the process, can detect and temperature signal is transferred to ECU by the cylinder temperature of preferable temperature sensor to petrol engine; Can preferably throttle position sensor or the operating mode of throttle valve switch to petrol engine detect working condition signal is transferred to ECU.
Temperature transducer is at warming-up transition temperature with the next stage, and perform warming-up control logic, demarcation air inlet control MAP when enabling warming-up carries out approaching control.
At the intake stroke of petrol engine, ECU is according to the oxygen content signal petrol engine rotational speed signal collected and the temperature signal (temperature transducer uses with the next stage at warming-up transition temperature) that can select and working condition signal, inquiry air inlet control MAP obtains start-up time and the duration of air intake control valve, namely at the intake stroke of petrol engine, the rear edge of the trigger impulse that ECU adopts trigger impulse device to provide is implemented synchronous (see Fig. 4), the value of the demarcation air inlet control MAP of car load is approached by air inlet control logic, provide the unlatching opportunity to the air intake control valve of auxiliary port and unlatching duration, thus realize synchronous unlatching air intake control valve and control duration, adjustment air fuel ratio, control the function of the exhaust emissions of driving, wherein, it is as follows that air inlet control logic performs the concrete steps controlled:
A) air inlet controlled conditions need be met 1.: lambda sensor is activated;
B) air inlet controlled conditions need be met 2.: the rotating speed of petrol engine in setting regions, namely between lower rotation speed limit and the rotating speed upper limit.
C) after entering air inlet control, ECU gathers oxygen content signal, petrol engine rotational speed signal, can collecting temperature signal and working condition signal, and according to the oxygen content signal that lambda sensor feeds back, the unlatching duration of petrol engine rotational speed SC sigmal control air intake control valve, concrete adjusting method following (see Fig. 3):
I) in petrol engine exhaust, oxygen content is thickened by rare, and petrol engine rotational speed between lower rotation speed limit and the rotating speed upper limit time, perform control logic to increase the air inlet duration of the air intake control valve of auxiliary port under intake stroke, thus reach the object of minimizing main airway air-intake negative-pressure;
II) petrol engine exhaust in oxygen content by dense thinning, and petrol engine rotational speed between lower rotation speed limit and the rotating speed upper limit time, perform control logic to reduce the air inlet duration of the air intake control valve of auxiliary port under intake stroke, thus reach the object of increase main airway air-intake negative-pressure;
III) in petrol engine exhaust, oxygen content is by dense thinning, and petrol engine rotational speed is less than lower rotation speed limit or is greater than on rotating speed in limited time, performs the air intake control valve that control logic closes auxiliary port under intake stroke.
In petrol engine using process, ECU, according to the petrol engine rotational speed signal gathered and oxygen content signal, carries out self study by Correction and Control logic to air inlet control MAP, implements the self adaption to Carburetor conformity or performance degradation.Like this, in user's using process, the air inlet control MAP of ECU to air intake control valve carries out self study, and the dynamic response that air fuel ratio is adjusted is faster, reaches and eliminates Carburetor performance degradation in use.The problem can not oneself revised when solving the changes such as product natural aging causes nozzle opening to wear and tear, trace blocking.
To sum up, in the utility model, ECU is by gathering the signals such as lambda sensor, petrol engine rotational speed, the throttle opening that can select, through judging and calculating, at the intake stroke of petrol engine, to unlatching timely progress row on the opportunity synchronization control of auxiliary port air intake control valve, accurately can control the air inflow of auxiliary port, and then realize the air-intake negative-pressure accurately controlling main airway, reach the object accurately controlling air fuel ratio.
Above embodiment is with reference to accompanying drawing, is described in detail to preferred embodiment of the present utility model.Those skilled in the art by carrying out amendment on various forms or change to above-described embodiment, but when not deviating from essence of the present utility model, drops within protection domain of the present utility model.
Claims (2)
1. a petrol engine air admission pressure electronic control system, it is characterized in that: comprise the Carburetor (1) with main airway (101), idling air flue (102) and at least one auxiliary port (103), described auxiliary port is provided with air intake control valve (104); The lambda sensor (3) also comprise the temperature transducer (2) for detecting the cylinder temperature of described petrol engine, detecting for oxygen content in the exhaust to described petrol engine, for pulse trigger (4) that the rotating speed of described petrol engine is detected and for according to the signal of described temperature transducer, lambda sensor, pulse trigger collection to the controller (5) controlled on the air inlet opportunity of described air intake control valve and air inlet duration.
2. petrol engine air admission pressure electronic control system according to claim 1, is characterized in that: described air intake control valve is the high-speed electromagnetic valve controlling air inlet opportunity and air inlet duration at the intake stroke of described petrol engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603116.XU CN204126743U (en) | 2014-10-17 | 2014-10-17 | Petrol engine air admission pressure electronic control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420603116.XU CN204126743U (en) | 2014-10-17 | 2014-10-17 | Petrol engine air admission pressure electronic control system |
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| Publication Number | Publication Date |
|---|---|
| CN204126743U true CN204126743U (en) | 2015-01-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420603116.XU Expired - Fee Related CN204126743U (en) | 2014-10-17 | 2014-10-17 | Petrol engine air admission pressure electronic control system |
Country Status (1)
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| CN (1) | CN204126743U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508067A (en) * | 2014-10-17 | 2016-04-20 | 上海渝癸德信息技术服务中心 | Gas inlet pressure electronic control system for gasoline engine and synchronous precise control method for gas inlet pressure electronic control system |
| CN107218144A (en) * | 2016-03-21 | 2017-09-29 | 福特环球技术公司 | For engine fuel and the method and system of moment of torsion control |
-
2014
- 2014-10-17 CN CN201420603116.XU patent/CN204126743U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105508067A (en) * | 2014-10-17 | 2016-04-20 | 上海渝癸德信息技术服务中心 | Gas inlet pressure electronic control system for gasoline engine and synchronous precise control method for gas inlet pressure electronic control system |
| WO2016058356A1 (en) * | 2014-10-17 | 2016-04-21 | 上海渝癸德信息技术服务中心 | Electronic control system for intake pressure of gasoline engine and synchronous precise control method therefor |
| CN107218144A (en) * | 2016-03-21 | 2017-09-29 | 福特环球技术公司 | For engine fuel and the method and system of moment of torsion control |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190918 Address after: Room 185, Block F, No. 18 Youai Road, Qingpu Industrial Park, Shanghai 201700 Patentee after: SHANGHAI GAISHENG TRADING FIRM Address before: Huaxin Town, Qingpu District 201700 Shanghai City Huateng Road No. 1288 1 1 storey building C room 194 Patentee before: Shanghai Yuguide Information Technology Service Center |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210826 Address after: 215300 Building No. 518 Cangye Road, Huaqiao Town, Kunshan City, Jiangsu Province Patentee after: KUNSHAN GONGCHENG ELECTRIC VEHICLE TECHNOLOGY Co.,Ltd. Address before: 201700 room 185, zone F, building 2, No. 18, Youai Road, Qingpu Industrial Park, Shanghai Patentee before: SHANGHAI GAISHENG TRADING FIRM |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150128 Termination date: 20211017 |