CN102050110A - Control system and method for increasing braking vacuum degree of petrol engine of small-displacement automobile in the state of turning on of air conditioner - Google Patents
Control system and method for increasing braking vacuum degree of petrol engine of small-displacement automobile in the state of turning on of air conditioner Download PDFInfo
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- CN102050110A CN102050110A CN2010105718640A CN201010571864A CN102050110A CN 102050110 A CN102050110 A CN 102050110A CN 2010105718640 A CN2010105718640 A CN 2010105718640A CN 201010571864 A CN201010571864 A CN 201010571864A CN 102050110 A CN102050110 A CN 102050110A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H1/00—Heating, cooling or ventilating [HVAC] devices
- B60H1/32—Cooling devices
- B60H1/3204—Cooling devices using compression
- B60H1/3205—Control means therefor
- B60H1/3208—Vehicle drive related control of the compressor drive means, e.g. for fuel saving purposes
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- Air-Conditioning For Vehicles (AREA)
Abstract
The invention relates to a measure for increasing the vacuum degree of an engine in the state of braking and tuning on of an air conditioner, in particular to a control system for increasing the braking vacuum degree of a petrol engine of a small-displacement automobile in the state of turning on of the air conditioner. The system comprises a branch pipe absolute pressure module, a speed comparing module and an air condition compressor state control module; meanwhile, the invention also provides a method for increasing the vacuum degree of the engine. Due to the adoption of the technical scheme, the aim of increasing the vacuum degree can be achieved without adding other facilities, and the cost is saved effectively.
Description
Technical field
The present invention relates to vehicle improves driving engine degree of vacuum when turning on the aircondition and under the situation of braking measure, the brake vacuum degree improved control system when especially the light car engine petrol was turned on the aircondition, and the present invention simultaneously also provides a kind of control method.
Background technology
Vacuum degree deficiency represents that engine intake manifold pressure is excessive, for electric-control motor, when engine speed is constant, the air-distributor pressure height is directly proportional with the size of the promptly inside and outside load of engine load, small displacement engine is because self torque characteristics deficiency is very sensitive to torque ripple, unlike large-duty engine, the proportion that the used moment of torsion of unlatching air-conditioning accounts for engine torque characteristics is very little, influences very low.
Prior art at association area, some small displacement engines employings method of setting pressure sensor on master brake cylinder judges whether the brake vacuum degree meets the demands, just take to cut off methods such as air-conditioning, hard closing throttle gate and increase degree of vacuum if do not satisfy, these class methods need increase a sensor and relevant wire harness, some vehicles also adopt and install storage tank additional or vacuum pump is installed on driving engine is solved in brake piping, and technical scheme all can increase excessive cost but adopt as above.
Summary of the invention
Be to solve the deficiencies in the prior art, the invention provides a kind of control system of driving engine degree of vacuum when can actv. improving car brakeing, it can save cost by actv..
For achieving the above object, the brake vacuum degree improved control system when light car engine petrol of the present invention was turned on the aircondition, and comprising:
The manifold absolute pressure module, this manifold absolute pressure module compares the manifold absolute pressure of driving engine with the manifold absolute pressure of being scheduled to;
Speed of a motor vehicle comparing module compares Vehicle Speed and preset vehicle speed scope;
The air-conditioning compressor status control module, be adhesive, speed-slackening signal arranged for closed, air-conditioning compressor at air conditioning switch, and when the manifold absolute pressure of manifold absolute pressure module indication driving engine showed that less than predetermined manifold absolute pressure, the speed of a motor vehicle comparing module Vehicle Speed is in the preset vehicle speed scope, this air-conditioning compressor state controlling module controls air-conditioning compressor quit work.
In the above-mentioned control system, when speed-slackening signal disappears, control air-conditioning compressor when the air-conditioning compressor status control module and start working.
In the above-mentioned control system, when the air-conditioning compressor status control module is zero or speed of a motor vehicle comparing module when showing the speed of a motor vehicle greater than the preset vehicle speed scope in the speed of a motor vehicle, the control air-conditioning compressor is started working.
Simultaneously, the brake vacuum degree improved control method when the present invention also provided a kind of light car engine petrol to turn on the aircondition, and this method comprises the steps:
The situation that above-mentioned control method, air-conditioning compressor are restarted work is:
The another kind of situation that above-mentioned control method, air-conditioning compressor are restarted work is:
Technique scheme, the computer program that can adopt one or more treaters to carry out is realized said system and method, because in practice, because air-conditioning compressor is as the applied load of maximum, also be unique controlled load cut off, adopt manifold absolute pressure module and speed of a motor vehicle comparing module as judging whether disconnect one of condition of air-conditioning compressor, in the process of implementation, need not increases the purpose that other facilities can realize that degree of vacuum improves, and has saved cost effectively.
Description of drawings
Below in conjunction with the drawings and the specific embodiments the present invention is done further to describe in detail:
Fig. 1 is the functional block diagram of vehicle motor and associated component;
Fig. 2 is not for adopting the manifold intake pressure and the time plot of technical solution of the present invention;
Fig. 3 is for adopting the manifold intake pressure and the time plot of technical solution of the present invention.
Among the figure:
1, driving engine; 2, on-board air conditioner module; 21, air-conditioning compressor switch; 3, car brake;
4, manifold pressure sensor; 5, manifold absolute pressure module; 51, pressure comparing module;
6, manifold; 7, speed of a motor vehicle detection module; 8, speed of a motor vehicle comparing module;
9, air-conditioning compressor status control module.
The specific embodiment
The following description of this invention only is schematically, and never is restriction the present invention and application or use.For clarity sake, use identical Reference numeral to represent similar element in the accompanying drawing.Should be appreciated that under the situation that does not change the principle of the invention step in the order manner of execution that can be different.
Term " module " refers to application-specific IC, electronic circuit, carries out treater and memory device, the combinational logic circuit of one or more softwares or hardware program and/or other suitable components of described function is provided as used herein.
Refer now to Fig. 1, illustrate engine system of the present invention with functional block diagram.Driving engine 1 receives air inlet by manifold 6, and manifold 6 links to each other with manifold absolute pressure module 5 by manifold sensor 4.Wherein, manifold sensor 4 produces the absolute pressure value signal in the expression manifold 6, send this force value signal to manifold absolute pressure module 5, after comparing by absolute pressure value in 51 pairs of manifolds 6 of the comparing module in the manifold absolute pressure module 5 and default manifold absolute pressure value, output comparison result signal.Specifically, this comparison result signal comprises two kinds, and when absolute pressure value in the manifold 6 during greater than default manifold absolute pressure value, the comparison result signal of output is NO, otherwise then is YES.
The other end of driving engine 1 is connected with on-board air conditioner module 2, and on-board air conditioner module 2 is by the 21 control air-conditioning compressor runnings of air-conditioning compressor switch.
Speed of a motor vehicle detection module 7 produces the current instantaneous vehicle speed signal of expression, and send this signal to coupled speed of a motor vehicle comparing module 8, after 8 pairs of current instantaneous speed of a motor vehicle of speed of a motor vehicle comparing module and preset vehicle speed value range are compared, output comparison result signal, this comparison result signal is divided into two kinds, when the current instantaneous speed of a motor vehicle is not in the preset vehicle speed scope is NO, otherwise then is YES.
Above-mentioned degree of vacuum value that presets and the vehicle speed value that presets can rationally be provided with according to the Combination property of vehicle discharge capacity, engine type and braking, guarantee that the power interruption that does not influence automotive engine under this degree of vacuum value gets final product.
Air-conditioning compressor status control module 9 links to each other with on-board air conditioner module 2, realization is to the control of on-board air conditioner module 2, its signal input part receives the output signal of manifold absolute pressure module 5, speed of a motor vehicle comparing module 8, drg 3, air-conditioning compressor switch 21 and air-conditioning compressor mode of operation detection module simultaneously, and when condition takes place, control air-conditioning compressor startup and quit work.The generation of its actual conditions step by the following method is illustrated:
The out-of-work method step of compressor when this embodiment takes place for condition, this step comprises:
The conditioned signal that step 1, air-conditioning compressor status control module 9 receive in the on-board air conditioner module 2, this conditioned signal is that air conditioning switch closure, air-conditioning compressor are attracting state, and has received the YES signal that car brake 3 produces;
Condition in above-mentioned steps one and the step 2, in the time of must all satisfying, air-conditioning compressor status control module 9 is just controlled air-conditioning compressor and is quit work.
In addition, on the above-mentioned steps basis, when speed-slackening signal is NO, or the speed of a motor vehicle is when being zero or the signal of speed of a motor vehicle comparing module 8 outputs when being NO, and air-conditioning compressor restarts work.
With reference now to Fig. 2,, the right longitudinal axis and the transverse axis of expression time that diagram of curves comprises the left longitudinal axis of expression collector pressure value, the air-conditioning work state is identified, among the figure, manifold intake pressure value is represented with irregular curve, dotted line represents to brake the braking zone bit when taking place, the corresponding right longitudinal axis 0 and 1 horizontal horizontal line are represented the mode of operation of air-conditioning this moment, promptly be positioned at 0 o'clock at horizontal horizontal line, the expression air-conditioning compressor disconnects, dotted line was represented and the brakeless signal at 0 o'clock, was that 1 situation is opposite with above-mentioned described implication corresponding to the right longitudinal axis.
As can be seen, step on glancing impact when connecting among this figure, the manifold intake pressure rises with the trend that slowly increases, and after the air-conditioning compressor disconnection, intake pressure sharply descends again, and rangeability surpasses 20,000 handkerchiefs, and then causes vacuum degree deficiency, and braking effect descends.
With reference now to Fig. 3,, horizontal ordinate implication is identical with Fig. 2 implication among the figure, figure after adopting technical scheme of the present invention, steps on braking when connecting as can be seen thus, intake pressure sharply rises, and after air-conditioning compressor disconnected, intake pressure descended with slow amplitude again, and its rangeability is controlled in 10,000 handkerchiefs, and then improved degree of vacuum, guaranteed the effect of braking.
The time value that transverse axis is represented among above-mentioned Fig. 2 and Fig. 3, expression be actual acquired data the time time, only expression is that curve numerical value among a time period and the figure does not have basic contact.
Those skilled in the art describes from fwd and is to be understood that, the present invention's implication widely can carry out in a variety of forms, therefore, although the present invention includes the above-mentioned specific specific embodiment, but because by research to accompanying drawing, specification sheets and claims, other are revised for technical personnel also is conspicuous, so actual range of the present invention should not be subjected to the restriction of foregoing.
Claims (6)
1. the brake vacuum degree improved control system when a light car engine petrol was turned on the aircondition, and it is characterized in that this system comprises:
The manifold absolute pressure module, this manifold absolute pressure module compares the manifold absolute pressure of driving engine with the manifold absolute pressure of being scheduled to;
Speed of a motor vehicle comparing module compares Vehicle Speed and preset vehicle speed scope;
The air-conditioning compressor status control module, be adhesive, speed-slackening signal arranged for closed, air-conditioning compressor at air conditioning switch, and when the manifold absolute pressure of manifold absolute pressure module indication driving engine showed that than module Vehicle Speed is in the preset vehicle speed scope less than predetermined manifold absolute pressure, speed of a motor vehicle comparison, this air-conditioning compressor state controlling module controls air-conditioning compressor quit work.
2. the brake vacuum degree improved control system when light car engine petrol according to claim 1 was turned on the aircondition, and it is characterized in that: described air-conditioning compressor status control module is controlled air-conditioning compressor and started working when speed-slackening signal disappears.
3. the brake vacuum degree improved control system when light car engine petrol according to claim 1 was turned on the aircondition, it is characterized in that: described air-conditioning compressor status control module is zero or speed of a motor vehicle comparing module when showing the speed of a motor vehicle greater than the preset vehicle speed scope in the speed of a motor vehicle, and the control air-conditioning compressor is started working.
4. the brake vacuum degree improved control method when a light car engine petrol was turned on the aircondition, and it is characterized in that this method comprises the steps:
Step 1, determine that whether air conditioning switch is the whether adhesive and whether speed-slackening signal is arranged of closed, air-conditioning compressor;
Step 2, determine driving engine manifold absolute pressure whether less than predetermined manifold absolute pressure, determine that simultaneously Vehicle Speed is whether in the preset vehicle speed scope;
Step 3, be adhesive, speed-slackening signal is arranged for closed, air-conditioning compressor at air conditioning switch, and the manifold absolute pressure of driving engine is less than predetermined manifold absolute pressure, Vehicle Speed in the preset vehicle speed scope time, the control air-conditioning compressor quits work.
5. the brake vacuum degree improved control method when light car engine petrol according to claim 4 was turned on the aircondition, and it is characterized in that this method comprises the steps:
Step 4, when determining that speed-slackening signal disappears, air-conditioning compressor is started working.
6. the brake vacuum degree improved control method when light car engine petrol according to claim 4 was turned on the aircondition, and it is characterized in that this method comprises the steps:
Step 4, be zero or during greater than the preset vehicle speed scope, air-conditioning compressor is started working in the speed of a motor vehicle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105718640A CN102050110B (en) | 2010-11-30 | 2010-11-30 | Control system and method for increasing braking vacuum degree of petrol engine of small-displacement automobile in the state of turning on of air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105718640A CN102050110B (en) | 2010-11-30 | 2010-11-30 | Control system and method for increasing braking vacuum degree of petrol engine of small-displacement automobile in the state of turning on of air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102050110A true CN102050110A (en) | 2011-05-11 |
| CN102050110B CN102050110B (en) | 2013-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105718640A Expired - Fee Related CN102050110B (en) | 2010-11-30 | 2010-11-30 | Control system and method for increasing braking vacuum degree of petrol engine of small-displacement automobile in the state of turning on of air conditioner |
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| CN (1) | CN102050110B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234856A (en) * | 2013-06-06 | 2014-12-24 | 通用汽车环球科技运作有限责任公司 | Method for controlling vacuum pressure in braking force amplifier of motor vehicle |
| CN105089839A (en) * | 2014-05-12 | 2015-11-25 | 福特环球技术公司 | System and method for generating vacuum for a vehicle |
| CN110621526A (en) * | 2017-05-16 | 2019-12-27 | 日产自动车株式会社 | Control method for vehicle air conditioner and vehicle air conditioner |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107458368A (en) * | 2017-07-26 | 2017-12-12 | 北京汽车股份有限公司 | Control method, system and the vehicle of vehicle |
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| CN101767581A (en) * | 2008-12-30 | 2010-07-07 | 比亚迪股份有限公司 | Vacuum assisted brake system, control method thereof, and vehicle comprising vacuum assisted brake system |
| KR20100088852A (en) * | 2009-02-02 | 2010-08-11 | 콘티넨탈 오토모티브 시스템 주식회사 | Method and system for controlling break of vehicle |
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2010
- 2010-11-30 CN CN2010105718640A patent/CN102050110B/en not_active Expired - Fee Related
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| JP2007030642A (en) * | 2005-07-26 | 2007-02-08 | Denso Corp | Drive control device of vehicle |
| KR20080051597A (en) * | 2006-12-06 | 2008-06-11 | 기아자동차주식회사 | Method for preventing engine stall in idle load of automatic transmission vehicle |
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| KR20100088852A (en) * | 2009-02-02 | 2010-08-11 | 콘티넨탈 오토모티브 시스템 주식회사 | Method and system for controlling break of vehicle |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104234856A (en) * | 2013-06-06 | 2014-12-24 | 通用汽车环球科技运作有限责任公司 | Method for controlling vacuum pressure in braking force amplifier of motor vehicle |
| CN105089839A (en) * | 2014-05-12 | 2015-11-25 | 福特环球技术公司 | System and method for generating vacuum for a vehicle |
| CN105089839B (en) * | 2014-05-12 | 2020-01-17 | 福特环球技术公司 | System and method for generating vacuum for a vehicle |
| CN110621526A (en) * | 2017-05-16 | 2019-12-27 | 日产自动车株式会社 | Control method for vehicle air conditioner and vehicle air conditioner |
| US10899354B2 (en) | 2017-05-16 | 2021-01-26 | Nissan Motor Co., Ltd. | Control method for vehicle air conditioning, and vehicle air conditioning device |
| CN110621526B (en) * | 2017-05-16 | 2021-03-30 | 日产自动车株式会社 | Control method for vehicle air conditioner and vehicle air conditioner |
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| CN102050110B (en) | 2013-01-16 |
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