CN101377157A - Extra-high compression ratio engine - Google Patents
Extra-high compression ratio engine Download PDFInfo
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- CN101377157A CN101377157A CNA2007101470714A CN200710147071A CN101377157A CN 101377157 A CN101377157 A CN 101377157A CN A2007101470714 A CNA2007101470714 A CN A2007101470714A CN 200710147071 A CN200710147071 A CN 200710147071A CN 101377157 A CN101377157 A CN 101377157A
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- compression ratio
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- Output Control And Ontrol Of Special Type Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a microcomputer-controlled ultrahigh compression ratio engine. When the engine is in operation, according to each control instruction and the signal of each sensor which are inputted into a microcomputer, the microcomputer controls each opening angle of an electronically controlled throttle. When knocking occurs, the electronically controlled throttle is controlled to be closed to a certain degree in order to reduce the air inflow of an air cylinder on the basis of a margin at which knocking cannot occur. The use of the ultrahigh compression ratio engine can increase heat efficiency, the max output power and the rotation speed of the max output power, reduce exhaust temperature and prolong the service lives of an exhaust valve. Consequently, most of the time when an automobile runs, the output power can be increased at the rotation speed, therefore, optimal economic and fuel-saving effects are achieved. When various fuels are used and the octane number of fuel or the gasoline number is large or small, the performance of the fuel can reach the optimal effect. The technology does not increase the number of the equipment and parts of the prior automotive engine, the microcomputer and the sensors can be shared, and thereof industrialization can be realized as quickly as possible.
Description
Technical field
The present invention relates to a kind of micro-processor controlled extrahigh compression engine of four-journey spark-ignition engine.
Background technique
At present, micro-processor controlled electronic control throttle technology (following abbreviation electronically controlled throttle valve) generally adopts.203 pages of motor that China Materials Publishing House publishes January calendar year 2001 and environmental protection one books; disclosed electronically controlled throttle valve; its major control project is driving force control; the automobile driving force is by deciding to motor air supplied amount; past; the driver only handles accelerator pedal and regulates, realized now idle speed control, instrument panel control, Ruiss Controll,, tractive force control, etc. multiple function.
China Patent No. 991107489, disclosed in the specification by micro-processor controlled variable variable compression ratio and variable valve timing, major control is advanced the opening and closing on the diverse location of crank angle of row, valve and the variable variable compression ratio that its control project is a motor, variable valve timing, is closed cylinder, chilling temperature adjusting automatically, compression brake, multiple functions such as decompression starting automatically automatically constantly.Wherein the variable variable compression ratio is to use high compression motor, and just Gu Ding compression ratio exceeds the compression ratio that this fuel uses.When microcomputer has pinking to take place according to motor, controlling intake valve automatically, close in advance, to reduce the air inflow in the cylinder, is to be determined at the edge that pinking does not at the end take place in compression.
Because the refinement technique of oil is improving year by year, the octane value of gasoline on the market, the seventies is minimum to be No. 66 octane values, minimum now is No. 90 octane values.There is the part automobile can't buy to be lower than No. 90 gasoline at present, and can only be with the gasoline that is higher than this car regulation use number, so, cause its usage economy of gasoline poor.Mainly be the compression ratio of motor, can not adapt to the usage requirement of various numbers number octane values.Its reason is a motor when design, can not surpass the height number of the octane number of selling on the market, thereby cause the projected life of compression ratio not long.
The objective of the invention is to make up above two kinds of technology, the combination of advantages controlling method together of a kind of electronically controlled throttle valve and variable variable compression ratio prior art is provided.Utilize this controlling method, can reduce fuel consumption and improve its usage economy of fuel, improve the maximum (top) speed and the maximum output of motor, improve the moment of torsion of sub load, and whole advantages of electronically controlled throttle valve and variable variable compression ratio are arranged.Do not increase the equipment and the component of motor, can realize industrialization closely soon.
For achieving the above object, extrahigh compression engine of the present invention, in engine operation, microcomputer is according to the data of the measurement of the data of each control command and each sensor, with electrical signal input microcomputer, after being compared and revise according to the program in the microcomputer, each opening angle of the automatically controlled closure of microcomputer control; Described fixedly compression ratio exceeds the superelevation compression ratio that this fuel uses compression ratio.
When described microcomputer had pinking to take place according to motor, the control electronically controlled throttle valve carried out certain closing, and to reduce the air inflow in the cylinder, was that but due to compression stroke at the end motor pinking does not take place is as the criterion; Described fixedly compression ratio exceeds the superelevation compression ratio that this fuel uses compression ratio 8%～100%; Described when the octane value that uses various fuel and fuel number number height, microcomputer according to the rotating speed of motor, load and have or not the pinking situation, control the aperture of electronically controlled throttle valve, to adapt to the use compression ratio of this fuel.
Extrahigh compression engine of the present invention has following beneficial effect compared with prior art:
1, uses extrahigh compression engine, improved the thermal efficiency, improved maximum output, improved the rotating speed of maximum output, reduce delivery temperature, improved the working life of exhaust valve simultaneously, so, in the most of the time of automobile running, to reach best Economy and fuel-saving effect.
When 2, using the octane value height of kind of fuel and fuel, can make the performance of this fuel reach best Economy.
3, present technique does not increase the equipment and the component of existing motor car engine, and shared microcomputer and sensor help the nearly fast industrialization that realizes.
Specific implementation method
Below in conjunction with embodiment, the invention will be further described:
In engine operation, microcomputer is according to the load that quickens position transducer control motor or the data of stabilized (steady-state) speed; The control data of each instruction; Engine speed and crankshaft position sensor are measured the data of engine speed, top dead center position and CAP; CMPS Camshaft Position Sensor is measured the data of camshaft location; Throttle position sensor is measured the data of throttle position, and detonation sensor is measured the data whether pinking takes place; Air flow sensor is measured the data of air inflow; Cooling-water temperature sensor is measured the data of engine cooling temperature; The data of altitude sensor measurement this area air density change are with electrical signal input microcomputer, after being compared and revise according to the program in the microcomputer, with each opening angle of current drives electronically controlled throttle valve.
Because the design inequality, inequality of size, shape and the position of the gas-entered passageway of various motors, exhaust passage, inlet and exhaust valve.Unimpeded and volumetric efficiency has certain influence for the air-flow of air inlet and exhaust, so the program in the microcomputer is to deposit in according to each load of motor and the test data of each rotating speed and each working condition.
The work of electronically controlled throttle valve is by microcomputer control, do not taking place under pinking and other the working condition, the open degree of electronically controlled throttle valve is synchronous with the aperture of quickening position transducer, when motor generation pinking, the microcomputer control closure carries out certain closing, to reduce the air inflow in the cylinder, be to be determined at compression stroke at the end, the edge that pinking does not take place is as the criterion.The compression ratio that the superelevation compression ratio is just fixing, exceed the superelevation compression ratio that this fuel uses compression ratio 8%～100%, the selection of superelevation compression ratio, be to select suitable compression ratio according to the use condition of motor, require motor big and Maximum Power Output is high at the output torque of sub load, compression ratio is chosen in a high position.When using various fuel and fuel octane number height, microcomputer is according to load, the rotating speed of motor and have or not pinking to take place, and the aperture of control closure is to adapt to the use compression of this fuel.
Such as: in the most of the time of automobile running, motor is to work under moderate duty, and 40%～60%, throttle opening is medium aperture to the motor of minibus through often, cylinder intake air quantity is basically 50%, and this moment is more much lower than what stipulate to use to the requirement of fuel octane number.
Extrahigh compression engine can adapt to the usage requirement of the octane value height of fuel, to the fixedly optimal selection of compression ratio, is the pinking edge not to take place in when automobile running most of, so select low octane value number more both economical.The use condition of fuel is after fixedly compression ratio is selected, and when using low fuel octane number, motor moment of torsion when the full load slow-speed of revolution is low, mainly is the control pinking, so that, the air inflow minimizing that cylinder is interior, on the contrary moment of torsion increases.So when sub load, when using the octane value height of fuel, moment of torsion is basic identical.
Claims (4)
1, a kind of extrahigh compression engine, in engine operation, microcomputer is according to the data of each control command and the data of each sensor measurement, with electrical signal input microcomputer, it is characterized in that: described compared and revised according to the program in the microcomputer after, each opening angle of control electronically controlled throttle valve; Described fixedly compression ratio exceeds the superelevation compression ratio that this fuel uses compression ratio.
2, superelevation compression engine according to claim 1, it is characterized in that: when microcomputer had pinking to take place according to motor, the control electronically controlled throttle valve carried out certain closing, to reduce the air inflow in the cylinder, be to be determined at compression stroke at the end, pinking does not take place and is as the criterion in motor.
3, superelevation compression engine according to claim 1 is characterized in that: fixing compression ratio exceeds the superelevation compression ratio that this fuel uses compression ratio 8%～100%.
4, superelevation compression engine according to claim 1, it is characterized in that: described at the octane value that uses various fuel and fuel number number just the time, microcomputer according to the rotating speed of motor, load and have or not the pinking situation, the aperture of control electronically controlled throttle valve is to adapt to the use compression ratio of this fuel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101470714A CN101377157A (en) | 2007-09-02 | 2007-09-02 | Extra-high compression ratio engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101470714A CN101377157A (en) | 2007-09-02 | 2007-09-02 | Extra-high compression ratio engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101377157A true CN101377157A (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CNA2007101470714A Pending CN101377157A (en) | 2007-09-02 | 2007-09-02 | Extra-high compression ratio engine |
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| CN (1) | CN101377157A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205809A1 (en) * | 2013-06-28 | 2014-12-31 | Yang Zengli | Variable compression ratio and variable air-fuel ratio method for internal combustion engine |
| CN110748430A (en) * | 2019-12-20 | 2020-02-04 | 潍柴西港新能源动力有限公司 | Control method and system for EGR (exhaust gas recirculation) correction knocking of natural gas engine |
| CN111102083A (en) * | 2020-01-07 | 2020-05-05 | 李贵臣 | Intelligent ultrahigh compression ratio engine |
-
2007
- 2007-09-02 CN CNA2007101470714A patent/CN101377157A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014205809A1 (en) * | 2013-06-28 | 2014-12-31 | Yang Zengli | Variable compression ratio and variable air-fuel ratio method for internal combustion engine |
| CN110748430A (en) * | 2019-12-20 | 2020-02-04 | 潍柴西港新能源动力有限公司 | Control method and system for EGR (exhaust gas recirculation) correction knocking of natural gas engine |
| CN111102083A (en) * | 2020-01-07 | 2020-05-05 | 李贵臣 | Intelligent ultrahigh compression ratio engine |
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Addressee: Bian Yongan Document name: Notification of before Expiration of Request of Examination as to Substance |
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| DD01 | Delivery of document by public notice |
Addressee: Bian Yongan Document name: Notification that Application Deemed to be Withdrawn |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20090304 |