CN111561561A - Method for improving energy consumption economy of automobile - Google Patents
Method for improving energy consumption economy of automobile Download PDFInfo
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- CN111561561A CN111561561A CN202010358995.4A CN202010358995A CN111561561A CN 111561561 A CN111561561 A CN 111561561A CN 202010358995 A CN202010358995 A CN 202010358995A CN 111561561 A CN111561561 A CN 111561561A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0015—Transmission control for optimising fuel consumptions
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H2061/0075—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by a particular control method
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H61/00—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing
- F16H61/02—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used
- F16H61/0202—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric
- F16H61/0204—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal
- F16H61/0213—Control functions within control units of change-speed- or reversing-gearings for conveying rotary motion ; Control of exclusively fluid gearing, friction gearing, gearings with endless flexible members or other particular types of gearing characterised by the signals used the signals being electric for gearshift control, e.g. control functions for performing shifting or generation of shift signal characterised by the method for generating shift signals
- F16H2061/0223—Generating of new shift maps, i.e. methods for determining shift points for a schedule by taking into account driveline and vehicle conditions
Abstract
A method of shifting to improve shift economy comprising the steps of: step 1, establishing a low-gear throttle opening retrieval table; step 2, sensing the actual driving environment and the driving intention, and searching the environment parameters, the vehicle parameters and the accelerator opening range corresponding to the engine parameters under the current driving gear in a retrieval table according to the states of all parts in the process of vehicle moving; step 3, identifying the accelerator opening and judging whether the current accelerator opening falls into the range of the retrieved accelerator opening; and 4, matching the optimal accelerator opening. The invention screens the control strategy from the actual driving behavior, and has high reliability and credibility; the method can be continuously optimized, and assists drivers with immature driving technologies to improve energy consumption economic performance indexes.
Description
Technical Field
The invention relates to automobile energy consumption control, in particular to a method for improving energy consumption economy of an automobile.
Background
The fuel economy of the automobile refers to the capacity of the automobile to finish unit transportation workload with the least fuel consumption, is an important index of the automobile, is directly related to the use cost of the automobile and improves the fuel economy of the automobile, more generally improves the energy consumption economic performance of the automobile, has important practical and economic significance, and becomes a problem which is commonly concerned by automobile manufacturers and automobile users.
The fuel economy of the automobile is evaluated, the fuel consumption (L/100km) of a unit journey or the fuel consumption (L/100km) of unit transportation work is often selected as an evaluation index, and the larger the numerical value is, the larger the energy consumption is, and the poorer the economic performance is. The fuel economy of an automobile is influenced by three aspects, namely the composition of the automobile, the using environment and a driver. The manual gear often has the condition that the accelerator opening is too large due to the fact that a low gear steps on the accelerator suddenly, the transmission ratio coefficient is large at the moment, the fuel economy waste caused by the fact is considerable, and tests show that the manual gear can roll the accelerator with one foot in place and the fuel consumption exceeds the driving amount of one kilometer. Especially, drivers with poor driving techniques such as novices and the like handle the relationship between poor gears and vehicle speed, such as deep stepping on an accelerator in low gears, and even enabling the rotating speed of the engine to exceed 3500 revolutions, thereby increasing the oil consumption. Even an old driver can judge the proper throttle control depth by listening to the sound of the engine and observing the engine parameters on the instrument panel, and cannot make accurate judgment with enough energy.
The industry has then developed shift prompting devices that take into account the engine fuel curve, and patent application 201810092861.5 has further developed shift prompting devices that take into account both the engine fuel curve and the transmission efficiency of the different gears of the transmission. The method disclosed in patent application 201710967287.9 is to transmit parameters such as driving speed, operating resistance, accelerator pedal position, gear position of a multi-gear transmission, speed ratio of a transmission system and efficiency to an electronic control unit, and then calculate an optimal solution of control parameters for closed-loop control of the whole transmission system.
The prior art does not consider optimizing the fuel economy of a vehicle by using differences between different drivers.
Disclosure of Invention
In light of the problems raised by the background, the present invention provides a method for improving the energy economy of a vehicle, and the present invention is further described below.
A gear shifting method for improving gear shifting economy is completed by a vehicle state sensing system, an engine state sensing system, a driver driving intention sensing system, an environment sensing system, a remote data acquisition system and a whole vehicle intelligent control system which are arranged; wherein the content of the first and second substances,
the vehicle state sensing system comprises various sensors for measuring vehicle speed, acceleration and gear parameters and is used for acquiring data of the vehicle speed, the acceleration and the gear parameters during vehicle operation;
the engine state sensing system comprises various sensors for measuring parameters such as rotating speed, torque, temperature and the like required by engine control;
the driver driving intention sensing system comprises sensors for measuring steering, accelerating, braking, clutch control, gear shifting and the like of a vehicle during running;
the environment sensing system comprises various sensors for measuring parameters such as environment temperature, gradient, wind power, road surface technical conditions and the like;
the remote data acquisition system comprises a vehicle operation monitoring platform of the vehicle enterprise, a national vehicle operation data acquisition system, a vehicle-mounted remote communication system and the like, so that the vehicle enterprise can obtain various devices of relevant parameters and technical data related to vehicle operation;
the whole vehicle intelligent control system is an intelligent control unit ECU used for collecting the measurement parameters of each sensing system of each system on the vehicle so as to control the vehicle to move.
The method comprises the following steps:
step 1, establishing a low-gear accelerator opening retrieval table, and comprehensively establishing the low-gear accelerator opening retrieval table together with influence factors of a vehicle, an engine, environment and driving intention in the process of advancing the vehicle as the retrieval table for retrieval;
step 2, sensing the actual driving environment and the driving intention, and searching the environment parameters, the vehicle parameters and the accelerator opening range corresponding to the engine parameters under the current driving gear in a retrieval table according to the states of all parts in the process of vehicle moving;
step 3, identifying the accelerator opening and judging whether the current accelerator opening falls into the range of the retrieved accelerator opening;
and 4, matching the optimal accelerator opening, judging whether the optimal accelerator opening is in the optimal accelerator opening range according to the actual driving state, if so, considering that the current accelerator opening is allowed, respecting the habits of various drivers without changing, otherwise, considering that the accelerator opening is not appropriate, selecting a middle value of the accelerator opening range with better energy consumption economy as a control strategy of the whole vehicle controller, updating the verified control strategy for the existing vehicle which steps on the accelerator at present, and controlling the supply of the accelerator.
Has the advantages that: compared with the prior art, the method has the advantages that the control strategy is screened from the actual driving behavior, and the reliability and the credibility are high; the method can be continuously optimized, and assists drivers with immature driving technologies to improve energy consumption economic performance indexes.
Drawings
FIG. 1: control schematic of the process of the invention;
Detailed Description
A specific embodiment of the present invention will be described in detail with reference to the accompanying drawings.
A gear shifting system method for improving energy consumption economy of an automobile is completed by an intelligent control system of the whole automobile, wherein the intelligent control system comprises a vehicle state sensing system, an engine state sensing system, a driver driving intention sensing system, an environment sensing system, a remote data acquisition system and a whole automobile intelligent control system; the whole vehicle intelligent control system is respectively connected with a vehicle state sensing system, an engine state sensing system, a driver driving intention sensing system, an environment sensing system and a remote data acquisition system; wherein the content of the first and second substances,
the vehicle state sensing system comprises various sensors for measuring vehicle speed, acceleration and gear parameters and is used for acquiring data of the vehicle speed, the acceleration and the gear parameters during vehicle operation;
the engine state sensing system comprises various sensors for measuring parameters such as rotating speed, torque, temperature and the like required by engine control;
the driver driving intention sensing system comprises sensors for measuring steering, accelerating, braking, clutch control, gear shifting and the like of a vehicle during running;
the environment sensing system comprises various sensors for measuring parameters such as environment temperature, gradient, wind power, road surface technical conditions and the like;
the remote data acquisition system comprises a vehicle operation monitoring platform of the vehicle enterprise, a national vehicle operation data acquisition system, a vehicle-mounted remote communication system and the like, so that the vehicle enterprise can obtain various devices of relevant parameters and technical data related to vehicle operation;
the whole vehicle intelligent control system is an intelligent control unit ECU used for collecting the measurement parameters of each sensing system of each system on the vehicle so as to control the vehicle to move.
The intelligent control system of the whole vehicle is connected with the remote data acquisition system, the intelligent control system of the whole vehicle transmits various collected data to the remote data acquisition system, and strategy analysis and verification are carried out on gear optimization during vehicle traveling through the intelligent control system of the whole vehicle and/or the remote data acquisition system by adopting the method as follows.
A method of shifting to improve shift economy comprising the steps of:
step 1, establishing a low-gear accelerator opening retrieval table, and comprehensively establishing the low-gear accelerator opening retrieval table together with influence factors of a vehicle, an engine, environment and driving intention in the process of advancing the vehicle as the retrieval table for retrieval;
step 2, sensing the actual driving environment and the driving intention, and searching the environment parameters, the vehicle parameters and the accelerator opening range corresponding to the engine parameters under the current driving gear in a retrieval table according to the states of all parts in the process of vehicle moving;
step 3, identifying the accelerator opening and judging whether the current accelerator opening falls into the range of the retrieved accelerator opening;
and 4, matching the optimal accelerator opening, judging whether the optimal accelerator opening is in the optimal accelerator opening range according to the actual driving state, if so, considering that the current accelerator opening is allowed, respecting the habits of various drivers without changing, otherwise, considering that the accelerator opening is not appropriate, selecting a middle value of the accelerator opening range with better energy consumption economy as a control strategy of the whole vehicle controller, updating the verified control strategy for the existing vehicle which steps on the accelerator at present, and controlling the supply of the accelerator.
The establishment of the low gear lower accelerator opening degree search table in the step 1 comprises the following steps:
step 11, vehicle classification, namely classifying according to the technical state of the vehicle and the technical state of the engine, and acquiring the parameters of the speed, the acceleration and the gear measured by the vehicle state sensing system;
step 12, gear classification, namely classifying parameters such as rotating speed, torque and temperature required by engine control, which are measured by the engine state sensing system, in the vehicle classification obtained in the step 11;
step 13, classifying the environmental scenes, and classifying the environmental factors measured by the environmental perception system in the gear classification obtained in the step 12;
step 14, establishing the range of oil consumption in each gear, selecting more than one experienced driver to drive under the factor combination in each environmental scene classification in step 13, collecting the accelerator opening data obtained by all the drivers, fitting and filling the accelerator opening data into a search table, specifically, for any unit of the search table, performing natural distribution processing on all the collected qualified data to obtain a normal distribution curve, taking the speed values within 3 standard deviations as optional suitable driving speeds, obtaining the state that the oil consumption in the speed value range corresponding to the unit cell reaches a better state, and sequentially obtaining the corresponding search table of the gear and the speed.
The invention screens the control strategy from the actual driving behavior, and has high reliability and credibility; the method can be continuously optimized, and assists drivers with immature driving technologies to improve energy consumption economic performance indexes.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (2)
1. A gear shifting method for improving gear shifting economy is characterized in that: the system is completed by a vehicle state sensing system, an engine state sensing system, a driver driving intention sensing system, an environment sensing system, a remote data acquisition system and a whole vehicle intelligent control system; wherein the content of the first and second substances,
the vehicle state sensing system comprises various sensors for measuring vehicle speed, acceleration and gear parameters and is used for acquiring data of the vehicle speed, the acceleration and the gear parameters during vehicle operation;
the engine state sensing system comprises various sensors for measuring parameters such as rotating speed, torque, temperature and the like required by engine control;
the driver driving intention sensing system comprises sensors for measuring steering, accelerating, braking, clutch control, gear shifting and the like of a vehicle during running;
the environment sensing system comprises various sensors for measuring parameters such as environment temperature, gradient, wind power, road surface technical conditions and the like;
the remote data acquisition system comprises a vehicle operation monitoring platform of the vehicle enterprise, a national vehicle operation data acquisition system, a vehicle-mounted remote communication system and the like, so that the vehicle enterprise can obtain various devices of relevant parameters and technical data related to vehicle operation;
the whole vehicle intelligent control system is an intelligent control unit ECU used for collecting the measurement parameters of each sensing system of each system on the vehicle so as to control the vehicle to move.
The method comprises the following steps:
step 1, establishing a low-gear accelerator opening retrieval table, and comprehensively establishing the low-gear accelerator opening retrieval table together with influence factors of a vehicle, an engine, environment and driving intention in the process of advancing the vehicle as the retrieval table for retrieval;
step 2, sensing the actual driving environment and the driving intention, and searching the environment parameters, the vehicle parameters and the accelerator opening range corresponding to the engine parameters under the current driving gear in a retrieval table according to the states of all parts in the process of vehicle moving;
step 3, identifying the accelerator opening and judging whether the current accelerator opening falls into the range of the retrieved accelerator opening;
and 4, matching the optimal accelerator opening, judging whether the optimal accelerator opening is in the optimal accelerator opening range according to the actual driving state, if so, considering that the current accelerator opening is allowed, respecting the habits of various drivers without changing, otherwise, considering that the accelerator opening is not appropriate, selecting a middle value of the accelerator opening range with better energy consumption economy as a control strategy of the whole vehicle controller, updating the verified control strategy for the existing vehicle which steps on the accelerator at present, and controlling the supply of the accelerator.
2. A gear shifting method for improving gear shift economy as set forth in claim 1, wherein: the establishment of the low gear lower accelerator opening degree search table in the step 1 comprises the following steps:
step 11, vehicle classification, namely classifying according to the technical state of the vehicle and the technical state of the engine, and acquiring the parameters of the speed, the acceleration and the gear measured by the vehicle state sensing system;
step 12, gear classification, namely classifying parameters such as rotating speed, torque and temperature required by engine control, which are measured by the engine state sensing system, in the vehicle classification obtained in the step 11;
step 13, classifying the environmental scenes, and classifying the environmental factors measured by the environmental perception system in the gear classification obtained in the step 12;
step 14, establishing the range of oil consumption in each gear, selecting more than one experienced driver to drive under the factor combination in each environmental scene classification in step 13, collecting the accelerator opening data obtained by all the drivers, fitting and filling the accelerator opening data into a search table, specifically, for any unit of the search table, performing natural distribution processing on all the collected qualified data to obtain a normal distribution curve, taking the speed values within 3 standard deviations as optional suitable driving speeds, obtaining the state that the oil consumption in the speed value range corresponding to the unit cell reaches a better state, and sequentially obtaining the corresponding search table of the gear and the speed.
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| CN202010358995.4A CN111561561A (en) | 2020-04-30 | 2020-04-30 | Method for improving energy consumption economy of automobile |
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Cited By (4)
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| CN111765245A (en) * | 2020-07-02 | 2020-10-13 | 汉腾汽车有限公司 | Gear shifting system and gear shifting method for improving gear shifting economy |
| CN113833838A (en) * | 2021-09-22 | 2021-12-24 | 西安法士特汽车传动有限公司 | Ramp gear-shifting control method for automatic gearbox of electric automobile based on driving intention |
| CN114623230A (en) * | 2022-03-21 | 2022-06-14 | 潍柴动力股份有限公司 | Vehicle gear adjusting method, device and system and storage medium |
| CN117445839A (en) * | 2023-11-09 | 2024-01-26 | 南京顺恒环保科技发展有限公司 | Environment-friendly vehicle intelligent control system and use method |
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Application publication date: 20200821 |