CN1897452A - Control for improving engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle - Google Patents
Control for improving engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle Download PDFInfo
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- CN1897452A CN1897452A CN 200510016982 CN200510016982A CN1897452A CN 1897452 A CN1897452 A CN 1897452A CN 200510016982 CN200510016982 CN 200510016982 CN 200510016982 A CN200510016982 A CN 200510016982A CN 1897452 A CN1897452 A CN 1897452A
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Abstract
The invention features the following points: the main controller of car is connected to the other components; after the engine gets a cold starting and before combustion of the mixed gas in the cylinder reaches a stable state, a controller in the control system prohibits the electric power generated from a power generator; the criteria of deciding if the engine reaches a stable combustion state includes the speed variation of engine in unit time, the water temperature, the engine oil temperature and the continuous operation time of engine after starting up.
Description
Technical field
The present invention relates to the control method of hybrid power automobile power system, particularly relate to the control method that improves engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle.
Background technology
Along with becoming increasingly conspicuous of global environment and energy problem, the new automobile of exploitation low emission, low oil consumption becomes the top priority of current automobile industry development.The mixed power electric car technology has been avoided the deficiency of pure electric automobile on battery technology and energy infrastructure, is a good solution of current problem, has become the focus of current international automobile research and development.
It is that assurance battery life-span itself and vehicle performance are necessary that the hybrid electric vehicle engine idling is generated electricity to battery in time replenishes electricity (energy) amount.The cold start-up initial stage is because of mist combustion instability in the engine cylinder, and this moment, engine speed was then unstable if add generation load, even produces flame-outly, causes the hybrid power system can't operate as normal.
Summary of the invention
The object of the present invention is to provide a kind of control method that improves engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle, make engine after cold start-up, the mist burning is forbidden generating before reaching and stablizing in cylinder, add generation load after the smooth combustion, at this moment the rotating speed of engine can be more stable.
Technical scheme of the present invention is achieved in that the control method that improves engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle, it is characterized in that control system comprises entire car controller, motor and controller thereof, engine and ECU (Electrical Control Unit) thereof, battery and administrative unit thereof, wherein entire car controller is electrically connected with other parts; Before mist reached smooth combustion in engine cold state starting back, cylinder, entire car controller was forbidden electric power generation; Differentiate condition that engine reaches the smooth combustion operating condition and be one of following or their combination: unit interval engine speed change amount is less than setting, or water temperature/oil temperature is greater than setting, or continuous operation time reaches setting after the engine start; When the information that provides from battery management unit shows that electric weight SOC is lower than the power generation region lower limit of setting in the system control program, engine speed/water temperature that entire car controller provides according to control unit of engine/information such as oil temperature, judge this moment, whether engine reached the smooth combustion operating condition, 1. be, controller instruction motor changes power generation mode over to, in motor and engine load regulating cycle, slowly increase corresponding both load, reach the current energy output requirement of hybrid power system until stable.2. deny, forbid generating, continue cycle criterion and whether satisfy engine smooth combustion operating condition.
Good effect of the present invention is after making the engine cold state starting, and the mist burning is forbidden generating before reaching and stablizing in cylinder; Guaranteed that hybrid power system can operate as normal under the cold conditions operating mode.
Description of drawings
Fig. 1 cold start-up initial stage engine speed and energy output concern schematic diagram.
Fig. 2 adopts the schematic diagram that concerns of engine speed of the present invention and energy output.
Embodiment
The present invention will be further described below in conjunction with embodiment:
Improve the control method of engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle, be to be carrier with the entire car controller, by comprising entire car controller, motor and controller thereof, engine and ECU (Electrical Control Unit) thereof, the control system of composition such as battery and administrative unit thereof realizes that wherein entire car controller is electrically connected with other parts; Entire car controller is the upper strata master controller of control system, and it is responsible for gathering and handling the hybrid power system working status parameter, and sends the operational order requirement to the low layer sub-controller.Electric machine controller is a low layer sub-controller of control system, and it is responsible for regulating parameters of electric power such as electric current, voltage, frequency, phase place, makes moment of torsion, the rotating speed of motor satisfy the entire car controller command request, and will send to entire car controller for information about.Control unit of engine is a low layer sub-controller of control system, and it is responsible for regulating the output torque and the rotating speed of engine, makes it to satisfy the entire car controller command request, and will send to entire car controller for information about.Battery management unit is a low layer sub-controller of control system, and it is responsible for detecting the parameters such as voltage, electric current and temperature of battery, calculates the SOC electrical parameter, and these parameters are sent to entire car controller.
Embodiment 1:
When the information that provides when battery management unit shows that electric weight is lower than the power generation region lower limit SOC 50% that sets in the system control program, the engine speed information calculations that entire car controller provides according to control unit of engine, judge that this moment engine variable quantity is whether less than ± 60r/min.If less than ± 60r/min, show that engine is the smooth combustion operating condition, entire car controller then sends instruction, make motor change power generation mode over to, in motor and engine load regulating cycle, slowly increase corresponding both load, reach the current energy output requirement of hybrid power system until stable.If not less than ± 60r/min, show that engine is not the steady running state, then send instruction and forbid electric power generation, continue cycle criterion and whether satisfy engine smooth combustion operating condition.
Embodiment 2:
When battery management unit provides information to show that electric weight is lower than the power generation region lower limit SOC 50% that sets in the system control program, its water temperature/oil temperature information that entire car controller provides according to control unit of engine judges this moment, whether engine reached the smooth combustion operating condition.If water temperature/oil temperature is greater than 50 ℃, show that engine is the steady running state, entire car controller then sends instruction, make motor change power generation mode over to, in motor and engine load regulating cycle, slowly increase corresponding both load, reach the current energy output requirement of hybrid power system until stable; If water temperature/oil temperature less than 50 ℃, shows that engine is not the steady running state, then forbid its generating, continue cycle criterion and whether satisfy engine smooth combustion operating condition.
Embodiment 3:
When the information that provides when battery management unit shows that electric weight is lower than the power generation region lower limit SOC 50% that sets in the system control program, the information that entire car controller provides according to control unit of engine, judge this moment, whether engine reached the smooth combustion operating condition, if continuous operation time was above 3 minutes after the engine start, show that then engine is the steady running state, entire car controller then sends instruction, make motor change power generation mode over to, in motor and engine load regulating cycle, slowly increase corresponding both load, reach the current energy output requirement of hybrid power system until stable.If continuous operation time does not surpass 3 minutes after the engine start, show that then engine is not the steady running state, then forbid its generating, continue cycle criterion and whether satisfy engine smooth combustion operating condition.
Claims (4)
1, improves the control method of engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle, it is characterized in that control system comprises entire car controller, motor and controller thereof, engine and ECU (Electrical Control Unit) thereof, battery and administrative unit thereof, wherein entire car controller is electrically connected with other parts; Before mist reached smooth combustion in engine cold state starting back, cylinder, entire car controller was forbidden electric power generation; The condition that the differentiation engine reaches the smooth combustion operating condition is: unit interval engine speed change amount; Water temperature/oil temperature; Continuous operation time after the engine start;
2, the control method of raising engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle according to claim 1, it is characterized in that: when the information that the entire car controller reception provides from battery management unit shows that electric weight SOC is lower than the power generation region lower limit of setting in the system control program, entire car controller comprises engine speed according to the information that control unit of engine provides, water temperature/oil temperature judges this moment, whether engine reached the smooth combustion operating condition, 1. be, controller instruction electric system changes power generation mode over to, in motor and engine load regulating cycle, slowly increase corresponding both load, reach the current energy output requirement of hybrid power system until stable.2. deny, forbid generating, continue cycle criterion and whether satisfy engine smooth combustion operating condition.
3, the control method of raising engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle according to claim 1 is characterized in that described engine reaches the criterion of smooth combustion operating condition:
Unit interval, the engine speed change amount was less than setting;
Water temperature/oil temperature is greater than setting;
Continuous operation time surpasses setting after the engine start.
4, the control method of raising engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle according to claim 3 is characterized in that the criterion that engine reaches the smooth combustion operating condition can be that unit interval engine speed change amount is less than setting; Water temperature/oil temperature is greater than setting; Continuous operation time surpasses one of setting condition or their combination after the engine start.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200510016982 CN1897452A (en) | 2005-07-15 | 2005-07-15 | Control for improving engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN 200510016982 CN1897452A (en) | 2005-07-15 | 2005-07-15 | Control for improving engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle |
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| CN1897452A true CN1897452A (en) | 2007-01-17 |
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| CN 200510016982 Pending CN1897452A (en) | 2005-07-15 | 2005-07-15 | Control for improving engine speed-idling generating rotation-speed stability of mixed-dynamical vehicle |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141015B (en) * | 2007-09-03 | 2011-04-06 | 奇瑞汽车股份有限公司 | Power generation mode control method of mix power vehicle |
| CN102454527A (en) * | 2010-10-27 | 2012-05-16 | 福特环球技术公司 | Methods and systems for engine starting |
| CN102674791A (en) * | 2011-03-18 | 2012-09-19 | 棕纤环保科技有限公司 | Sheet material made of oil palm fibres and magnesium oxide and method for producing same |
| CN101648511B (en) * | 2009-09-04 | 2012-11-28 | 奇瑞汽车股份有限公司 | Control method of engine speed of hybrid car in generating state |
| CN104890668A (en) * | 2015-05-28 | 2015-09-09 | 安徽江淮汽车股份有限公司 | Control method for battery system of hybrid vehicle |
| CN114909228A (en) * | 2022-05-27 | 2022-08-16 | 中国第一汽车股份有限公司 | Engine starting control method and device, hybrid vehicle and storage medium |
-
2005
- 2005-07-15 CN CN 200510016982 patent/CN1897452A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101141015B (en) * | 2007-09-03 | 2011-04-06 | 奇瑞汽车股份有限公司 | Power generation mode control method of mix power vehicle |
| CN101648511B (en) * | 2009-09-04 | 2012-11-28 | 奇瑞汽车股份有限公司 | Control method of engine speed of hybrid car in generating state |
| CN102454527A (en) * | 2010-10-27 | 2012-05-16 | 福特环球技术公司 | Methods and systems for engine starting |
| CN102454527B (en) * | 2010-10-27 | 2016-10-19 | 福特环球技术公司 | Engine starting system and Vehicular system |
| CN102674791A (en) * | 2011-03-18 | 2012-09-19 | 棕纤环保科技有限公司 | Sheet material made of oil palm fibres and magnesium oxide and method for producing same |
| CN102674791B (en) * | 2011-03-18 | 2014-10-29 | 棕纤环保科技有限公司 | Sheet material made of oil palm fibres and magnesium oxide and method for producing same |
| CN104890668A (en) * | 2015-05-28 | 2015-09-09 | 安徽江淮汽车股份有限公司 | Control method for battery system of hybrid vehicle |
| CN114909228A (en) * | 2022-05-27 | 2022-08-16 | 中国第一汽车股份有限公司 | Engine starting control method and device, hybrid vehicle and storage medium |
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Open date: 20070117 |