WO2013065127A1 - 内燃機関の制御装置 - Google Patents
内燃機関の制御装置 Download PDFInfo
- Publication number
- WO2013065127A1 WO2013065127A1 PCT/JP2011/075186 JP2011075186W WO2013065127A1 WO 2013065127 A1 WO2013065127 A1 WO 2013065127A1 JP 2011075186 W JP2011075186 W JP 2011075186W WO 2013065127 A1 WO2013065127 A1 WO 2013065127A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- internal combustion
- combustion engine
- catalyst
- temperature
- engine
- Prior art date
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D23/00—Controlling engines characterised by their being supercharged
- F02D23/02—Controlling engines characterised by their being supercharged the engines being of fuel-injection type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/02—Circuit arrangements for generating control signals
- F02D41/04—Introducing corrections for particular operating conditions
- F02D41/042—Introducing corrections for particular operating conditions for stopping the engine
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N11/00—Starting of engines by means of electric motors
- F02N11/08—Circuits or control means specially adapted for starting of engines
- F02N11/0814—Circuits or control means specially adapted for starting of engines comprising means for controlling automatic idle-start-stop
- F02N11/0818—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
- F02N11/0829—Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode related to special engine control, e.g. giving priority to engine warming-up or learning
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N2200/00—Parameters used for control of starting apparatus
- F02N2200/02—Parameters used for control of starting apparatus said parameters being related to the engine
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
Definitions
- the present invention relates to a technical field of a control device for an internal combustion engine mounted on a vehicle such as an automobile.
- a control device for an engine mounted on a hybrid vehicle the engine is stopped on condition that the engine stop condition is satisfied and the temperature of the purification device is equal to or lower than a threshold value.
- a device has been proposed that continues the operation of the engine at a preset ignition timing after starting the engine on the condition that the stop condition is satisfied and the temperature of the purification device is higher than the threshold (see Patent Document 1). .
- the present invention has been made in view of the above-mentioned problems, for example, and an object of the present invention is to provide a control device for an internal combustion engine that can suppress an excessive increase in catalyst temperature.
- a control device of the present invention is a control device for an internal combustion engine with a supercharger having an idle stop mechanism, which detects atmospheric pressure, and the detected atmospheric pressure is a low value.
- the control unit changes the threshold value related to the parameter permitting the execution of the idle stop process by the idle stop mechanism to the side where the execution of the idle stop process is not permitted.
- the control device controls an internal combustion engine with a supercharger having an idle stop mechanism.
- the “idle stop mechanism” is a mechanism that stops the internal combustion engine by detecting the stop of the vehicle, and restarts the internal combustion engine by detecting a start operation of the vehicle. Since various known modes can be applied to the idle stop mechanism, a detailed description thereof will be omitted.
- control means comprising a memory, a processor, etc. detects the atmospheric pressure, and the lower the detected atmospheric pressure is, the lower the value of the threshold value relating to the parameter that permits the execution of the idle stop process by the idle stop mechanism, Change to the side that is not allowed to perform idle stop processing.
- catalyst warm-up control is performed in the cold state in order to appropriately purify the exhaust gas.
- the amount of air taken into the internal combustion engine decreases, so the energy input to the catalyst decreases, making it difficult to activate the catalyst and maintain the active state of the catalyst.
- the internal combustion engine stops relatively frequently due to the execution of the idle stop process, so that it becomes more difficult to activate the catalyst.
- catalyst warm-up control such as supplying a relatively high temperature exhaust gas to the catalyst is performed relatively frequently.
- catalyst warm-up control is performed while the vehicle is running.
- Energy may be supplied and the temperature of the catalyst may increase excessively.
- the threshold value related to the parameter permitting the execution of the idle stop process is changed to the side where the execution of the idle stop process is not permitted. Is done.
- the parameter is a temperature of a catalyst disposed in an exhaust passage of the supercharged internal combustion engine.
- FIG. 1 is a block diagram illustrating a configuration of a vehicle according to the embodiment.
- an internal combustion engine 10 is mounted on a vehicle 1 such as an automobile.
- An internal combustion engine 10 includes a main body 11 having a plurality of cylinders, an intake passage 12 and an exhaust passage 13 connected to the main body 11, and a turbocharger having a compressor 14 c and a turbine 14 t disposed in the intake passage 12. 14, a valve 15 disposed in the intake passage 12 and capable of adjusting the amount of air flowing into the intake passage 12 (ie, the intake amount), a catalyst 16 disposed in the exhaust passage 13, and disposed in the exhaust passage 13. And a valve 17 capable of adjusting the distribution of exhaust gas to the turbocharger 14 and an injector 18 capable of adjusting the amount of fuel supplied to each of the plurality of cylinders.
- a sensor 21 capable of measuring the intake air amount is provided in the intake passage 12 of the internal combustion engine 10. Further, in the exhaust passage 13 of the internal combustion engine 10, a sensor 22 that can measure the air-fuel ratio, a sensor 23 that can measure the temperature of exhaust gas that has passed through the turbocharger 14, and the temperature of exhaust gas that has not passed through the turbocharger 14. And a sensor 25 capable of detecting the catalyst bed temperature of the catalyst 16 are provided.
- An ECU (Electronic Control Unit: electronic control unit) 30 provided in the vehicle 1 controls the injector 18 and the various valves 15 and 17 in accordance with signals output from the various sensors 21, 22, 23, 24 and 25.
- the ECU 30 compares, for example, “urban mode (the rotational speed and load of the internal combustion engine 10 are relatively low: low rotational speed and low load)” and “high speed mode (the rotational speed and load of the internal combustion engine 10 are compared).
- the switch SW for switching the driving mode such as “highly high: high rotation and high load)” is controlled.
- the ECU 30 detects the stop of the vehicle 1 to stop the internal combustion engine 10 and also detects a start operation related to the vehicle 1 (for example, the depression amount of the brake pedal becomes zero).
- the internal combustion engine 10 is restarted. That is, the ECU 30 is configured to be able to perform idle stop processing.
- the “turbocharger 14” and the “ECU 30” according to the present embodiment are examples of the “supercharger” and the “idle stop mechanism” according to the present invention, respectively.
- the control apparatus 100 detects the atmospheric pressure, and the lower the detected atmospheric pressure is, the lower the threshold value related to the parameter that permits the execution of the idle stop process is, the more the execution of the idle stop process is performed.
- the ECU 30 includes an ECU 30 as an example of the “control unit” according to the present invention that is changed to an unpermitted side. That is, in this embodiment, a part of the functions of the various electronic control ECUs 30 of the vehicle 1 are used as at least a part of the control device 100.
- the ECU 30 uses the following formulas (1) to (3) to determine a threshold value related to a parameter permitting the execution of the idle stop process (here, “ Th_on ” that is a threshold value related to the catalyst bed temperature). change.
- “Flat ground” according to the present embodiment means an area where the atmospheric pressure is about 1 atm.
- the “high altitude” according to the present embodiment means an area of atmospheric pressure that affects the amount of intake air to the internal combustion engine 10.
- Engine stop execution bed temperature T L_on of level ground the engine generates heat Q L_in in flat, level ground at the engine heat discharge Q L_out, and the engine generated heat amount Q h-- upland, respectively, for example, previously determined by experiment or simulation or the like Is the default value.
- the catalyst activation temperature T sc and the calorific value ⁇ Q per unit fuel are fixed values, respectively.
- the engine input air amount Ga is calculated or estimated based on a signal output from the sensor 21.
- the exhaust heat release amount Q out_NA of the path not passing through the turbocharger is calculated or estimated based on a signal output from the sensor 24.
- the exhaust heat release amount Q out_TC of the path passing through the turbocharger is calculated or estimated based on a signal output from the sensor 23.
- the exhaust amount ratio WGV of the path passing through the turbocharger is calculated or estimated based on the opening degree of the valve 17.
- the air / fuel ratio A / F is measured by the sensor 22.
- Atmospheric pressure P l and the atmospheric pressure P h of upland flat ground, respectively, is estimated based on a correlation between the degree of opening of the valve 15, the intake air amount indicated by the signal output from the sensor 21.
- the atmospheric pressure Pl of the flat ground may be obtained in advance when the vehicle 1 is traveling on the flat ground (that is, before reaching the high ground).
- various well-known aspects are applicable to the atmospheric pressure estimation method, a detailed description thereof will be omitted.
- the ECU 30 performs an idling stop process when the catalyst bed temperature of the catalyst 16 is higher than the calculated engine stop execution bed temperature Th_on at a high altitude. On the other hand, when the catalyst bed temperature of the catalyst 16 is lower than the calculated engine stop execution bed temperature Th_on at the high altitude, the ECU 30 prohibits the idling stop process from being performed. When the catalyst bed temperature and the engine stop execution bed temperature Th_on at high altitude are “equal”, they may be included in either case.
- the value measured by the sensor 25 may be used as the catalyst bed temperature, or may be estimated from, for example, the exhaust temperature and the exhaust amount ratio WGV passing through the turbocharger.
- the description about the detail is omitted.
- the relationship between the calculated engine stop execution floor temperature Th_on at high altitude and the atmospheric pressure is, for example, as shown in FIG. 2, the value of the engine stop execution floor temperature Th_on at high altitude increases as the atmospheric pressure decreases. Become. For this reason, the lower the atmospheric pressure, the more difficult the catalyst bed temperature becomes higher than the engine stop execution bed temperature Th_on (that is, the threshold value) at high altitude. As a result, the idling stop process is less likely to be performed as the atmospheric pressure decreases.
- FIG. 3 is an example of a map showing the relationship between atmospheric pressure and engine stop execution catalyst bed temperature.
- step S101 the ECU 30 determines whether or not it is time to perform engine stop execution determination.
- step S101: No the timing for performing the engine stop execution determination
- step S101: Yes the ECU 30 acquires values indicated by signals output from various sensors (step S102).
- the ECU 30 may determine whether or not it is time to perform the engine stop execution determination by determining whether or not a predetermined time has elapsed since the previous engine stop execution determination was performed.
- the ECU 30 calculates the engine stop execution floor temperature Th_on at high altitude using the above-described equations (1) to (3) (step S103). Next, the ECU 30 determines whether or not the measured or estimated catalyst bed temperature is higher than the calculated engine stop execution bed temperature Th_on at a high altitude (step S104).
- step S104 When it is determined that the measured or estimated catalyst bed temperature is higher than the calculated engine stop execution bed temperature Th_on at the high altitude (step S104: Yes), the ECU 30 performs idling stop processing (that is, the vehicle 1 is stopped). Execution of the engine stop) is permitted (step S105). On the other hand, when it is determined that the measured or estimated catalyst bed temperature is lower than the calculated engine stop execution bed temperature Th_on at the high altitude (step S104: No), the ECU 30 prohibits the idling stop process from being performed. (Step S106).
- the engine stop execution floor temperature Th_on at high altitude is learned from, for example, the driving pattern of the driver of the vehicle 1 (for example, the accelerator operation of the driver during the catalyst warm-up period), and the like.
- the obtained coefficient, information related to the travel route of the vehicle 1 may be acquired and corrected by the coefficient related to the acquired information, etc.
- this invention is applicable not only to a vehicle provided with an idle stop mechanism but to a hybrid vehicle.
- the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the gist or concept of the invention that can be read from the claims and the entire specification, and the control of the internal combustion engine accompanying such a change.
- the apparatus is also included in the technical scope of the present invention.
- SYMBOLS 1 Vehicle, 10 ... Internal combustion engine, 11 ... Main part, 12 ... Intake passage, 13 ... Exhaust passage, 14 ... Turbocharger, 16 ... Catalyst, 30 ... ECU, 100 ... Control device
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Exhaust Gas After Treatment (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
本実施形態に係る内燃機関の構成について、図1を参照して説明する。図1は、実施形態に係る車両の構成を示すブロック図である。
本実施形態に係る制御装置100は、大気圧を検出し、該検出された大気圧が低い値であるほど、アイドルストップ処理の実施を許可するパラメータに係る閾値を、該アイドルストップ処理の実施が許可されない側へ変更する、本発明に係る「制御手段」の一例としての、ECU30を備えて構成されている。つまり、本実施形態では、車両1の各種電子制御用のECU30の機能の一部を、制御装置100の少なくとも一部として用いている。
ここで、“Th_on”、“Tl_on”、“Tsc”、“Qh_in”、“Qh_out”、“Ql_in”、“Ql_out”、“Ga”、“A/F”、“ΔQ”、“Qout_NA”、“Qout_TC”、“WGV”、“Ph”及び“Pl”は、夫々、「高地でのエンジンストップ実行床温(K)」、「平地でのエンジンストップ実行床温(K)」、「触媒活性温度(K)」、「高地でのエンジン発生熱量(J)」、「高地でのエンジン放熱量(J)」、「平地でのエンジン発生熱量(J)」、「平地でのエンジン放熱量(J)」、「エンジン投入空気量(g)」、「空燃比」、「単位燃料当たりの発熱量(J/g)」、「ターボチャージャを通過しない経路の排気放熱量」、「ターボチャージャを通過する経路の排気放熱量」、「ターボチャージャを通過する経路の排気量割合」、「高地の大気圧(kPa)」、及び「平地の大気圧(kPa)」である。尚、“()”内の記号は単位を表わしている。
次に、以上のように構成された制御装置100の一部としてのECU30が、車両1の走行中又は停車中に実施するエンジンストップ実行判定処理を、図3のフローチャートを参照して説明する。
Claims (2)
- アイドルストップ機構を有する過給機付き内燃機関の制御装置であって、
大気圧を検出し、前記検出された大気圧が低い値であるほど、前記アイドルストップ機構によるアイドルストップ処理の実施を許可するパラメータに係る閾値を、前記アイドルストップ処理の実施が許可されない側へ変更する制御手段を備える
ことを特徴とする制御装置。 - 前記パラメータは、前記過給機付き内燃機関の排気通路に配置された触媒の温度であることを特徴とする請求項1に記載の制御装置。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/075186 WO2013065127A1 (ja) | 2011-11-01 | 2011-11-01 | 内燃機関の制御装置 |
JP2013541514A JP5737421B2 (ja) | 2011-11-01 | 2011-11-01 | 内燃機関の制御装置 |
CN201180073212.7A CN103764976A (zh) | 2011-11-01 | 2011-11-01 | 内燃机的控制装置 |
US14/350,717 US20140230783A1 (en) | 2011-11-01 | 2011-11-01 | Control apparatus for internal combustion engine |
EP11874985.2A EP2775124A4 (en) | 2011-11-01 | 2011-11-01 | INTERNAL COMBUSTION ENGINE CONTROL DEVICE |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/JP2011/075186 WO2013065127A1 (ja) | 2011-11-01 | 2011-11-01 | 内燃機関の制御装置 |
Publications (1)
Publication Number | Publication Date |
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WO2013065127A1 true WO2013065127A1 (ja) | 2013-05-10 |
Family
ID=48191522
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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PCT/JP2011/075186 WO2013065127A1 (ja) | 2011-11-01 | 2011-11-01 | 内燃機関の制御装置 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20140230783A1 (ja) |
EP (1) | EP2775124A4 (ja) |
JP (1) | JP5737421B2 (ja) |
CN (1) | CN103764976A (ja) |
WO (1) | WO2013065127A1 (ja) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015224109A1 (de) * | 2015-12-02 | 2017-06-08 | Bayerische Motoren Werke Aktiengesellschaft | Start-Stopp-Einrichtung zum Einleiten eines automatischen Abschaltvorgangs einer Antriebsmaschine eines Kraftfahrzeugs |
US11085389B1 (en) * | 2020-05-19 | 2021-08-10 | Ford Global Technologies, Llc | Methods and system for automatic engine stopping |
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JP2000337189A (ja) * | 1999-05-26 | 2000-12-05 | Toyota Motor Corp | 内燃機関の制御装置 |
JP2001050076A (ja) * | 1999-08-03 | 2001-02-23 | Denso Corp | エンジンの自動制御装置 |
JP2002188484A (ja) | 2000-12-15 | 2002-07-05 | Nissan Motor Co Ltd | 内燃機関の制御装置 |
JP2003239782A (ja) | 2002-02-20 | 2003-08-27 | Toyota Motor Corp | 機関一時停止を伴う車輌用内燃機関の運転方法 |
JP2005003004A (ja) * | 2004-09-09 | 2005-01-06 | Denso Corp | エンジンの自動制御装置 |
JP2007309113A (ja) | 2006-05-16 | 2007-11-29 | Toyota Motor Corp | 動力出力装置、それを搭載した車両及び動力出力装置の制御方法 |
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JP3880752B2 (ja) * | 1999-08-06 | 2007-02-14 | 本田技研工業株式会社 | エンジン自動始動停止制御装置 |
JP2001173504A (ja) * | 1999-12-17 | 2001-06-26 | Honda Motor Co Ltd | 触媒温度の推定装置 |
JP4175385B2 (ja) * | 2006-05-29 | 2008-11-05 | トヨタ自動車株式会社 | 内燃機関の排気浄化触媒暖機システム |
JP4973374B2 (ja) * | 2007-08-07 | 2012-07-11 | 日産自動車株式会社 | ハイブリッド原動機の制御装置 |
JP2010019178A (ja) * | 2008-07-11 | 2010-01-28 | Denso Corp | エンジンの制御装置 |
US8392091B2 (en) * | 2008-08-22 | 2013-03-05 | GM Global Technology Operations LLC | Using GPS/map/traffic info to control performance of aftertreatment (AT) devices |
DE102009010926B4 (de) * | 2009-02-27 | 2019-05-16 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Verfahren zum Betreiben einer Brennkraftmaschine sowie eine Steuer- und/oder Regeleinrichtung hierfür |
-
2011
- 2011-11-01 JP JP2013541514A patent/JP5737421B2/ja not_active Expired - Fee Related
- 2011-11-01 WO PCT/JP2011/075186 patent/WO2013065127A1/ja active Application Filing
- 2011-11-01 EP EP11874985.2A patent/EP2775124A4/en not_active Withdrawn
- 2011-11-01 US US14/350,717 patent/US20140230783A1/en not_active Abandoned
- 2011-11-01 CN CN201180073212.7A patent/CN103764976A/zh active Pending
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Publication number | Priority date | Publication date | Assignee | Title |
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JP2000337189A (ja) * | 1999-05-26 | 2000-12-05 | Toyota Motor Corp | 内燃機関の制御装置 |
JP2001050076A (ja) * | 1999-08-03 | 2001-02-23 | Denso Corp | エンジンの自動制御装置 |
JP2002188484A (ja) | 2000-12-15 | 2002-07-05 | Nissan Motor Co Ltd | 内燃機関の制御装置 |
JP2003239782A (ja) | 2002-02-20 | 2003-08-27 | Toyota Motor Corp | 機関一時停止を伴う車輌用内燃機関の運転方法 |
JP2005003004A (ja) * | 2004-09-09 | 2005-01-06 | Denso Corp | エンジンの自動制御装置 |
JP2007309113A (ja) | 2006-05-16 | 2007-11-29 | Toyota Motor Corp | 動力出力装置、それを搭載した車両及び動力出力装置の制御方法 |
Non-Patent Citations (1)
Title |
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See also references of EP2775124A4 |
Also Published As
Publication number | Publication date |
---|---|
EP2775124A1 (en) | 2014-09-10 |
JPWO2013065127A1 (ja) | 2015-04-02 |
CN103764976A (zh) | 2014-04-30 |
JP5737421B2 (ja) | 2015-06-17 |
EP2775124A4 (en) | 2015-04-08 |
US20140230783A1 (en) | 2014-08-21 |
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