CN103847459A - Method for controlling engine to be automatically stopped or started based on comfort of vehicle-mounted air conditioner - Google Patents
Method for controlling engine to be automatically stopped or started based on comfort of vehicle-mounted air conditioner Download PDFInfo
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- CN103847459A CN103847459A CN201210511233.9A CN201210511233A CN103847459A CN 103847459 A CN103847459 A CN 103847459A CN 201210511233 A CN201210511233 A CN 201210511233A CN 103847459 A CN103847459 A CN 103847459A
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Abstract
The invention provides a method for controlling an engine to be automatically stopped or started. The method comprises the following steps of judging that whether the engine is applicable to be automatically stopped at present or not based on an allowable scope of stop or start; under the circumstance of a judging result 'Applicable', allowing the engine to be automatically stopped, and under the circumstance of a judging result 'Inapplicable', prohibiting the engine from being automatically stopped. According to the method for controlling the engine to be automatically stopped or started disclosed by the invention, the cost is lower; moreover, while the comfort of a vehicle-mounted air conditioner is improved, the chance of exerting the stopping or starting function of the engine is added.
Description
Technical field
The present invention relates to the method for the automatic stop and start of control engine, more specifically, relate to the method for the automatic stop and start of traveling comfort control engine based on on-board air conditioner.
Background technology
Current, growing and universal along with vehicle, becomes more and more important by the consumption of the automatic stop and start techniques save of driving engine fuel oil.
The automatic stop and start control method of existing driving engine is automatically cut off the fuel delivery of driving engine in the time of vehicle stop; make engine shutdown to save the fuel oil consumption of engine idle; and automatic actuation engine in the time that vehicle is prepared starting, to provide vehicular drive needed power.
But because driving engine is also the refrigeration source of on-board air conditioner and heats source simultaneously, therefore the automatic stop and start meeting of driving engine exerts an influence to the traveling comfort of on-board air conditioner.In order to address this problem, conventionally adopt following several mode: (1) is used electric air-conditioning, the refrigeration of air-conditioning provides and does not rely on driving engine with heating by electric power; (2) use temperature sensor in cabin, to judge the difference of actual temperature and chaufeur design temperature in cabin, and the auto-stop of forbidding as excessive in difference; (3) use air-conditioning A/C signal to judge, if A/C opens, forbid auto-stop.
But, there are the following problems for such scheme: (1) is for first kind of way, because electric air-conditioning cost is higher, therefore be not suitable for using on low and middle-grade vehicles, in addition, because electric air-conditioning power consumption is large, thus easily make battery electric quantity in reduced levels, thus the limit value that out of reach stopping function works; (2) for the second way, owing to being only applicable to install the automatic air condition of temperature sensor in cabin, therefore inapplicable to the manual air-conditioning of temperature sensor is not installed in cabin, in addition, the difference occupant of actual temperature and chaufeur design temperature not knowing in cabin, therefore it is poor to cause occupant's traveling comfort to be experienced, it can feel that stop and start system sometimes works, sometimes inoperative; (3) for the third mode; because A/C signal only characterizes the refrigerating function of air-conditioning; so scheme is not considered the impact of auto-stop on air-conditioning heating; in addition; in the ordinary course of things; shutdown in short-term can't affect on-board air conditioner traveling comfort, and this scheme has been forbidden such temporary stoppage, therefore reduced the active chance of stop and start merit.
Therefore, there is following demand: the method that the automatic stop and start of control engine of the traveling comfort that can improve on-board air conditioner are provided.
Summary of the invention
In order to solve the existing problem of above-mentioned prior art scheme, the present invention proposes the method for the automatic stop and start of control engine of the traveling comfort that can improve on-board air conditioner.
The object of the invention is to be achieved through the following technical solutions:
A method for the automatic stop and start of control engine, described method comprises the following steps:
(A1) judge the current automatic engine stop that whether is applicable to based on stop and start allowed band, wherein, described stop and start allowed band is determined by following mode: if the setting air quantity of current on-board air conditioner is less than or equal to air quantity threshold value, and the design temperature of current on-board air conditioner is more than or equal to temperature lower threshold value and is less than or equal to temperature upper threshold value, allow automatic engine stop, otherwise forbid automatic engine stop;
(A2) if judged result is " be applicable to shut down ", allow automatic engine stop, and if judged result is " being not suitable for shutting down ", forbid automatic engine stop.
In the above in disclosed scheme, preferably, when starting time meter during by auto-stop, driving engine calculates the time length of this time shutting down.
In disclosed scheme, preferably, described step (A1) further comprises in the above: current in running state time when driving engine, judge that the current process that whether is applicable to automatic engine stop is as follows: determine that on-board air conditioner is current and whether open; If determine the current not unlatching of on-board air conditioner, allow automatic engine stop; If determine the current unlatching of on-board air conditioner, further judge the current automatic engine stop that whether is applicable to based on described stop and start allowed band.
In the above in disclosed scheme, preferably, described step (A1) further comprises: current in stopped status time when driving engine, judge currently whether be applicable to driving engine to keep process in stopped status as follows: determine that on-board air conditioner is current and whether open; If determine the current not unlatching of on-board air conditioner, allow driving engine to keep in stopped status; If determine the current unlatching of on-board air conditioner; further judge the current automatic engine stop that whether is applicable to based on described stop and start allowed band; and if judge that the current downtime duration in described stop and start allowed band and the indication of described time meter does not exceed downtime duration threshold value; allow automatic engine stop, otherwise forbid automatic engine stop.
In disclosed scheme, alternatively, if the air quantity of described on-board air conditioner has the temperature of 8 grades of settings and described on-board air conditioner to have 8 grades of settings, described air quantity threshold value is 2 in the above, and described temperature upper threshold value is 8, and described temperature lower threshold value is 0.
In disclosed scheme, alternatively, if the air quantity of described on-board air conditioner has the temperature of 8 grades of settings and described on-board air conditioner to have 8 grades of settings, described air quantity threshold value is 2 in the above, and described temperature upper threshold value is 5, and described temperature lower threshold value is 4.
In disclosed scheme, preferably, the span of described downtime duration threshold value is 15 seconds to 300 seconds in the above.
The method of the automatic stop and start of control engine disclosed in this invention has the following advantages: (1) has avoided using the expensive and high power consumption of electric vehicle-mounted air-conditioning; (2) no matter on-board air conditioner that whether temperature sensor is installed in cabin is all applicable, thereby there is wider Applicable scope; (3), because control method is simply clear and definite, experience therefore improved occupant's traveling comfort; (4) can take into account the refrigeration traveling comfort of on-board air conditioner simultaneously and heat traveling comfort; (5) due to when the refrigeration of on-board air conditioner or heat demand hour, allow shutdown in short-term, therefore increased the active chance of stop and start merit.
Accompanying drawing explanation
By reference to the accompanying drawings, technical characterictic of the present invention and advantage will be understood better by those skilled in the art, wherein:
Fig. 1 is the diagram of circuit of the method for the automatic stop and start of control engine according to an embodiment of the invention;
Fig. 2 is the first graphical representation of exemplary of the stop and start allowed band based on setting air quantity and design temperature;
Fig. 3 is the second graphical representation of exemplary of the stop and start allowed band based on setting air quantity and design temperature.
The specific embodiment
Fig. 1 is the diagram of circuit of the method for the automatic stop and start of control engine according to an embodiment of the invention.As shown in Figure 1, the method of the automatic stop and start of control engine disclosed in this invention comprises the following steps: that (A1) judges the current automatic engine stop that whether is applicable to based on stop and start allowed band, wherein, described stop and start allowed band is determined by following mode: if the setting air quantity of current on-board air conditioner is less than or equal to air quantity threshold value, and the design temperature of current on-board air conditioner is more than or equal to temperature lower threshold value and is less than or equal to temperature upper threshold value, allow automatic engine stop, otherwise forbid automatic engine stop; (A2) if judged result is " be applicable to shut down ", allow automatic engine stop, and if judged result is " being not suitable for shutting down ", forbid automatic engine stop.
Preferably, in the method for the automatic stop and start of control engine disclosed in this invention, when starting time meter during by auto-stop, driving engine calculates the time length of this time shutting down.
Preferably, in the method for the automatic stop and start of control engine disclosed in this invention, described step (A1) further comprises: current in running state time when driving engine, judge that the current process that whether is applicable to automatic engine stop is as follows: determine that on-board air conditioner is current and whether open; If determine the current not unlatching of on-board air conditioner, allow automatic engine stop; If determine the current unlatching of on-board air conditioner, further judge the current automatic engine stop that whether is applicable to based on described stop and start allowed band.
Preferably, in the method for the automatic stop and start of control engine disclosed in this invention, described step (A1) further comprises: current in stopped status time when driving engine, judge currently whether be applicable to driving engine to keep process in stopped status as follows: determine that on-board air conditioner is current and whether open; If determine the current not unlatching of on-board air conditioner, allow driving engine to keep in stopped status; If determine the current unlatching of on-board air conditioner; further judge the current automatic engine stop that whether is applicable to based on described stop and start allowed band; and if judge that the current downtime duration in described stop and start allowed band and the indication of described time meter does not exceed downtime duration threshold value; allow automatic engine stop, otherwise forbid automatic engine stop (being that driving engine must start immediately).
Exemplarily, in the method for the automatic stop and start of control engine disclosed in this invention, described air quantity threshold value, temperature lower threshold value and temperature upper threshold value to shut down after air-conditioning keep remaining cold/ability of waste heat is relevant, and mode is by experiment obtained.
Exemplarily, in the method for the automatic stop and start of control engine disclosed in this invention, described downtime duration threshold value to shut down after air-conditioning keep remaining cold/ability of waste heat is relevant, and mode is by experiment obtained.
Fig. 2 is the first graphical representation of exemplary of the stop and start allowed band based on setting air quantity and design temperature.As shown in Figure 2, alternatively, in the method for the automatic stop and start of control engine disclosed in this invention, if the air quantity of described on-board air conditioner has the temperature of 8 grades of settings and described on-board air conditioner to have 8 grades of settings, described air quantity threshold value can be 2, described temperature upper threshold value can be 8, and described temperature lower threshold value can be 0.
Fig. 3 is the second graphical representation of exemplary of the stop and start allowed band based on setting air quantity and design temperature.As shown in Figure 3, alternatively, in the method for the automatic stop and start of control engine disclosed in this invention, if the air quantity of described on-board air conditioner has the temperature of 8 grades of settings and described on-board air conditioner to have 8 grades of settings, described air quantity threshold value can be 2, described temperature upper threshold value can be 5, and described temperature lower threshold value can be 4.
Exemplarily, in the method for the automatic stop and start of control engine disclosed in this invention, the span of described downtime duration threshold value is 15 seconds to 300 seconds.
Therefore the method tool of the automatic stop and start of control engine disclosed in this invention has the following advantages: (1) has avoided using the expensive and high power consumption of electric vehicle-mounted air-conditioning; (2) no matter on-board air conditioner that whether temperature sensor is installed in cabin is all applicable, thereby there is wider Applicable scope; (3), because control method is simply clear and definite, experience therefore improved occupant's traveling comfort; (4) can take into account the refrigeration traveling comfort of on-board air conditioner simultaneously and heat traveling comfort; (5) due to when the refrigeration of on-board air conditioner or heat demand hour, allow shutdown in short-term, therefore increased the active chance of stop and start merit.
Although the present invention is described by above-mentioned preferred implementation, its way of realization is not limited to above-mentioned embodiment.Should be realized that: in the situation that not departing from purport of the present invention and scope, those skilled in the art can make different variations and modification to the present invention.
Claims (7)
1. a method for the automatic stop and start of control engine, described method comprises the following steps:
(A1) judge the current automatic engine stop that whether is applicable to based on stop and start allowed band, wherein, described stop and start allowed band is determined by following mode: if the setting air quantity of current on-board air conditioner is less than or equal to air quantity threshold value, and the design temperature of current on-board air conditioner is more than or equal to temperature lower threshold value and is less than or equal to temperature upper threshold value, allow automatic engine stop, otherwise forbid automatic engine stop;
(A2) if judged result is " be applicable to shut down ", allow automatic engine stop, and if judged result is " being not suitable for shutting down ", forbid automatic engine stop.
2. the method for the automatic stop and start of control engine according to claim 1, is characterized in that, calculates the time length of this time shutting down when driving engine starts time meter during by auto-stop.
3. the method for the automatic stop and start of control engine according to claim 2, it is characterized in that, described step (A1) further comprises: current in running state time when driving engine, judge that the current process that whether is applicable to automatic engine stop is as follows: determine that on-board air conditioner is current and whether open; If determine the current not unlatching of on-board air conditioner, allow automatic engine stop; If determine the current unlatching of on-board air conditioner, further judge the current automatic engine stop that whether is applicable to based on described stop and start allowed band.
4. the method for the automatic stop and start of control engine according to claim 3, it is characterized in that, described step (A1) further comprises: current in stopped status time when driving engine, judge currently whether be applicable to driving engine to keep process in stopped status as follows: determine that on-board air conditioner is current and whether open; If determine the current not unlatching of on-board air conditioner, allow driving engine to keep in stopped status; If determine the current unlatching of on-board air conditioner; further judge the current automatic engine stop that whether is applicable to based on described stop and start allowed band; and if judge that the current downtime duration in described stop and start allowed band and the indication of described time meter does not exceed downtime duration threshold value; allow automatic engine stop, otherwise forbid automatic engine stop.
5. the method for the automatic stop and start of control engine according to claim 1, it is characterized in that, if the air quantity of described on-board air conditioner has the temperature of 8 grades of settings and described on-board air conditioner to have 8 grades of settings, described air quantity threshold value is 2, described temperature upper threshold value is 8, and described temperature lower threshold value is 0.
6. the method for the automatic stop and start of control engine according to claim 5, it is characterized in that, if the air quantity of described on-board air conditioner has the temperature of 8 grades of settings and described on-board air conditioner to have 8 grades of settings, described air quantity threshold value is 2, described temperature upper threshold value is 5, and described temperature lower threshold value is 4.
7. the method for the automatic stop and start of control engine according to claim 6, is characterized in that, the span of described downtime duration threshold value is 15 seconds to 300 seconds.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210511233.9A CN103847459B (en) | 2012-12-04 | 2012-12-04 | The method of the pleasant climate automatic stop and start of electromotor based on on-board air conditioner |
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| CN201210511233.9A CN103847459B (en) | 2012-12-04 | 2012-12-04 | The method of the pleasant climate automatic stop and start of electromotor based on on-board air conditioner |
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| CN103847459A true CN103847459A (en) | 2014-06-11 |
| CN103847459B CN103847459B (en) | 2016-12-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104842739A (en) * | 2014-11-13 | 2015-08-19 | 北汽福田汽车股份有限公司 | Vehicle control system, vehicle and control method |
| CN106143057A (en) * | 2015-05-14 | 2016-11-23 | 铃木株式会社 | Vehicular air conditioner control device |
| CN107719371A (en) * | 2017-09-25 | 2018-02-23 | 上汽通用汽车有限公司 | Control method, the device and system of the automatic start-stop system of vehicle |
| CN110966104A (en) * | 2019-11-26 | 2020-04-07 | 奇瑞汽车股份有限公司 | System and method for calculating engine system downtime |
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| EP0021353B1 (en) * | 1979-06-22 | 1983-09-21 | Nippondenso Co., Ltd. | Air conditioner control method and apparatus |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104842739A (en) * | 2014-11-13 | 2015-08-19 | 北汽福田汽车股份有限公司 | Vehicle control system, vehicle and control method |
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| CN107719371A (en) * | 2017-09-25 | 2018-02-23 | 上汽通用汽车有限公司 | Control method, the device and system of the automatic start-stop system of vehicle |
| CN110966104A (en) * | 2019-11-26 | 2020-04-07 | 奇瑞汽车股份有限公司 | System and method for calculating engine system downtime |
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| CN103847459B (en) | 2016-12-28 |
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