EP0939859A1 - Drive mechanism for a motor vehicle - Google Patents
Drive mechanism for a motor vehicleInfo
- Publication number
- EP0939859A1 EP0939859A1 EP98949906A EP98949906A EP0939859A1 EP 0939859 A1 EP0939859 A1 EP 0939859A1 EP 98949906 A EP98949906 A EP 98949906A EP 98949906 A EP98949906 A EP 98949906A EP 0939859 A1 EP0939859 A1 EP 0939859A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- crankshaft
- starting
- internal combustion
- combustion engine
- cylinder
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
- F02N99/00—Subject matter not provided for in other groups of this subclass
-
- 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
- F02N99/00—Subject matter not provided for in other groups of this subclass
- F02N99/002—Starting combustion engines by ignition means
- F02N99/006—Providing a combustible mixture inside the cylinder
-
- 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
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
-
- 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
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/005—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation
- F02N2019/007—Aiding engine start by starting from a predetermined position, e.g. pre-positioning or reverse rotation using inertial reverse rotation
Definitions
- the invention relates to a drive of a motor vehicle with an internal combustion engine with the features mentioned in the preamble of claim 1.
- the internal combustion engine is known to turn it up with an electric starter, the pinion of which engages in a toothed ring arranged in a rotationally fixed manner with a crankshaft of the internal combustion engine and turns it on.
- This starting device has been tried and tested, but has the disadvantage that, in addition to noise generation due to mechanical wearing parts, only a limited number of starting processes can be carried out.
- crankshaft is brought into a defined position by means of a positioning device, so that the piston of a starting cylinder - a piston defined from the total number of pistons of the internal combustion engine - is brought into a starting position and remains there, and then a first combustion torque is generated by injecting and igniting fuel, which is used to crank the internal combustion engine.
- the disadvantage here is that only one relative due to the prepositioning time poor starting dynamics can be achieved, so that self-running of the internal combustion engine is only achieved after a relatively long time.
- the drive of a motor vehicle according to the invention with the features mentioned in claim 1 offers the advantage that a fast self-running of an internal combustion engine can be achieved in a simple manner.
- the crankshaft can be brought into a predeterminable starting position via an electrical machine that is switched to motor operation and which is non-positively coupled to a crankshaft of the internal combustion engine, when the starting position of the crankshaft is reached, the direct injection and ignition of the fuel takes place, via the electric machine can exert a torque on the crankshaft during the entire starting process, is advantageously possible via a coordinated rotation angle, speed and injection control of the internal combustion engine and the superimposition of the torque generated electrically via the electric machine with a first ignition of the Internal combustion engine, generated combustion torque to achieve a continuously accelerated run-up of the internal combustion engine, so that it automatically passes seamlessly into self-running.
- the speed of the crankshaft of the internal combustion engine is during the first direct injection of fuel and its subsequent ignition from zero, so that the internal combustion engine develops a significantly higher torque when starting, compared to when starting with the crankshaft stationary, via the applied combustion torque due to the first ignition.
- This combustion torque is supported by the electrical machine that is still in engine operation, so that the crankshaft accelerates rapidly and the internal combustion engine starts to run at the latest from the second injection and ignition.
- a highly dynamic start and highly dynamic startup of the internal combustion engine is achieved.
- a high or self-running of the internal combustion engine can be achieved for a high number of start cycles, which can be, for example, several 100,000 start cycles.
- the current crankshaft position is determined to initiate the starting process, and the crankshaft is brought from the current crankshaft position to the starting position by the shortest route, regardless of the direction of rotation, and then rotated in the correct direction from the ignition point.
- the drive 10 comprises an internal combustion engine 12, which has four cylinders 14, for example.
- the cylinders 14 are assigned a crankshaft 16, which converts the movement of pistons arranged in the cylinders 14 into a rotary movement of an output shaft 18 in a known manner.
- the output shaft 18 is non-positively coupled to an electrical machine 22 via a transmission 20.
- the drive 10 further comprises a main gear, not shown, via which a rotary movement of the output shaft 18 on the drive wheels. which is transferable to the motor vehicle.
- the transmission 20 shown here is part of the main transmission, not shown.
- a crank angle sensor 24 is assigned to the crankshaft 16, via which the position of the crankshaft 16 can be determined. This is preceded by a coding, so that, for example, the angle of rotation 0 ° means a defined position of the crankshaft 16.
- the cylinders 14 have direct injection and ignition, not shown in detail, which can be controlled via a control unit 26.
- the connecting lines 28 indicated here are provided between the control unit 26 and the injection and ignition.
- the control unit 26 is also connected to the rotation angle sensor 24 via the connecting line 30.
- Another connecting line 32 is used to control the electrical machine 22 via the control device 26.
- the internal combustion engine 12 is started as follows:
- the electrical machine 22 is operated in motor operation, with regulation taking place via the control unit 26.
- Motor operation of the electrical machine 22 causes the crankshaft 16 to rotate via the transmission 20 and the output shaft 18.
- the current crankshaft position is detected by the rotation angle sensor 24 and reported to the control unit 26.
- the crankshaft 16 reaches an angular position, that of a predetermined starting position corresponds to one of the cylinders 14, which is selected as a starting cylinder depending on the initial position, via the control unit 26 to inject fuel and then ignite it.
- the electromotive drive of the crankshaft 16 via the electrical machine 22 is not interrupted here.
- crankshaft 16 is rotated by the electric machine 22, which stops when the defined starting position and the subsequent injection and ignition in the starting cylinder are reached.
- the crankshaft 16 therefore has a non-zero speed.
- an electrical or mechanical torque applied via the electrical machine 22 is thus superimposed with a combustion torque caused by the combustion in the starting cylinder.
- the electrical machine 22 remains switched in the engine mode, so that a corresponding torque superposition due to the successive ignition of the individual cylinders 14 (combustion torques) with the electromotive Toric applied torque results.
- the acceleration of the internal combustion engine 12 caused by the combustion moments in the individual cylinders 14 is supported by the electrical machine 22 operating as an electric motor.
- the control of injection and ignition coordinated by the control unit 26 leads to a superimposition of electrically and thermodynamically generated torques and thus to a continuously accelerated motion sequence of the crankshaft 16, which merges seamlessly into the self-running of the internal combustion engine 12.
- the control of the electrical machine 22 via the control unit 26 can be designed such that in the vicinity of a cold start limit temperature, when the internal combustion engine 12 is not yet warm, only an electrically generated torque is required which is slightly higher than the sum of the frictional moments of the internal combustion engine .
- the first cylinder 14, which is then the starting cylinder, is virtually injected and ignited at a relatively low speed of the crankshaft 16.
- cylinder 14 can serve as a starting cylinder, the piston of which first reaches the favorable starting position via the electromotive rotation of crankshaft 16.
- a favorable angular position of the crankshaft 16 is achieved, for example, when the piston of the starting cylinder 14 has an angular position clearly after top dead center, for example 30 to 70 degrees.
- One of the cylinders 14 is selected via the control unit 26 as the starting cylinder, the piston of which first reaches the predeterminable starting position in accordance with the starting position of the crankshaft 16.
- the crankshaft 16 is turned back at the starting point in such a way that the piston of the selected cylinder 14 moves backwards into the starting position, that is to say into the position of, for example 30 to 70 degrees after the top dead center of the engine 12 is brought.
- This results in compression in the starting cylinder which leads to a significant increase in the combustion torque of the starting combustion in the subsequent direct injection and ignition of the fuel. This significantly increases the dynamics of the starting process.
- a further optimization of the starting process can take place in that the valve control for injecting the fuel into the cylinders 14 during the starting process can be optimized to the combustion torques to be applied during the starting. This can be done, for example, by means of an electromagnetic valve control via the control unit 26.
- crankshaft 16 is rotated via the electrical machine 22, the favorable starting position being tapped off via the rotary angle sensor 24, which provides a corresponding feedback to the control unit 26, which then controls the injection and ignition.
- the electrical machine 22 can be switched from the motor to the generator mode at a selectable rotational speed of the crankshaft 16 and that with the output shaft 18.
- the electrical machine 22 can also be switched back from generator to motor operation as a function of the speed. According to the selectable switching speed, generator operation of the electrical machine 22 is possible at relatively low speeds of the crankshaft 16 without the risk of an interruption since the internal combustion engine 12 can easily be intercepted at low speeds by switching over the electrical machine 22.
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19741294 | 1997-09-19 | ||
DE19741294A DE19741294A1 (en) | 1997-09-19 | 1997-09-19 | Drive for motor vehicle with internal combustion engine |
PCT/DE1998/002390 WO1999015787A1 (en) | 1997-09-19 | 1998-08-17 | Drive mechanism for a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0939859A1 true EP0939859A1 (en) | 1999-09-08 |
EP0939859B1 EP0939859B1 (en) | 2003-01-29 |
Family
ID=7842892
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98949906A Expired - Lifetime EP0939859B1 (en) | 1997-09-19 | 1998-08-17 | Drive mechanism for a motor vehicle |
Country Status (7)
Country | Link |
---|---|
US (1) | US6202614B1 (en) |
EP (1) | EP0939859B1 (en) |
JP (1) | JP4152449B2 (en) |
KR (1) | KR100739353B1 (en) |
BR (1) | BR9806180A (en) |
DE (2) | DE19741294A1 (en) |
WO (1) | WO1999015787A1 (en) |
Families Citing this family (32)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19817497A1 (en) * | 1998-04-20 | 1999-10-28 | Isad Electronic Sys Gmbh & Co | Method for starting motor vehicle IC engine |
CN1126866C (en) * | 1998-12-09 | 2003-11-05 | 株式会社美姿把 | Starting device for I.C. engines and starting control device |
DE19960984A1 (en) * | 1999-12-17 | 2001-06-21 | Bosch Gmbh Robert | Process for controlling the stopping of an internal combustion engine |
DE50108310D1 (en) | 2000-03-31 | 2006-01-12 | Siemens Ag | METHOD FOR STARTING AN INTERNAL COMBUSTION ENGINE AND STARING DEVICE FOR AN INTERNAL COMBUSTION ENGINE |
EP1300587B1 (en) * | 2000-07-11 | 2010-10-06 | Aisin Aw Co., Ltd. | Hybrid drive device |
FR2827911B1 (en) * | 2001-07-27 | 2004-01-30 | Peugeot Citroen Automobiles Sa | STOP ADJUSTMENT PROCESS AND RESTART PROCESS OF AN INTERNAL COMBUSTION ENGINE |
JP3571014B2 (en) * | 2001-08-30 | 2004-09-29 | 本田技研工業株式会社 | Automatic stop / start control device for internal combustion engine |
US7072757B2 (en) * | 2001-10-29 | 2006-07-04 | Caterpillar Inc. | Fuel control system |
JP4273838B2 (en) * | 2002-09-30 | 2009-06-03 | トヨタ自動車株式会社 | Start control device for internal combustion engine |
DE10304449B4 (en) * | 2003-02-04 | 2007-10-25 | Siemens Ag | Method for controlling a direct injection of an internal combustion engine |
JP3941705B2 (en) * | 2003-02-13 | 2007-07-04 | トヨタ自動車株式会社 | Internal combustion engine stop / start control device |
DE10315283B3 (en) * | 2003-04-03 | 2004-07-08 | Siemens Ag | Optimization method for ignition of air-fuel mixture for instant starting of fuel injection IC engine without using electric starter motor e.g. for automobile with start-stop operating mode |
EP1464833A3 (en) | 2003-04-03 | 2008-06-11 | Continental Automotive GmbH | Process for preparation of a fuel-air mixture for direct starting of a combustion engine |
DE10318427B4 (en) | 2003-04-23 | 2014-02-20 | Continental Automotive Gmbh | Method for starting an internal combustion engine |
DE10360798B3 (en) * | 2003-12-23 | 2005-06-30 | Bayerische Motoren Werke Ag | Start preparation method for automobile internal combustion engine uses setting device for adjusting piston positions during correction phase with compensation of thermophysical influences on gases contained in engine cylinders |
DE10360795B4 (en) * | 2003-12-23 | 2006-04-13 | Bayerische Motoren Werke Ag | Outlet control for the controlled shutdown of an internal combustion engine |
EP1586765B1 (en) * | 2004-04-15 | 2011-06-29 | TEMIC Automotive Electric Motors GmbH | Method and control system for positioning the crankshaft during shutdown of a combustion engine |
JP4338659B2 (en) * | 2005-03-02 | 2009-10-07 | 株式会社日立製作所 | Method and apparatus for starting internal combustion engine |
DE102005016067B4 (en) * | 2005-04-07 | 2007-06-21 | Siemens Ag | Method for increasing the start reproducibility during start-stop operation of an internal combustion engine |
DE102006045661B4 (en) | 2006-09-27 | 2018-08-02 | Robert Bosch Gmbh | Method for starting an internal combustion engine |
DE102007019941A1 (en) * | 2007-04-27 | 2008-11-06 | Robert Bosch Gmbh | Method for positioning a crankshaft of a switched-off internal combustion engine of a motor vehicle |
DE102007058227B4 (en) | 2007-12-04 | 2019-01-31 | Robert Bosch Gmbh | Method for operating an internal combustion engine and control or regulating device for an internal combustion engine |
DE102010041519B3 (en) * | 2010-09-28 | 2011-12-22 | Robert Bosch Gmbh | Method for stoppage of diesel internal combustion engine, involves stopping multiple intake valves or exhaust valves after deactivation request and during phasing out of diesel internal combustion engine |
DE102010041844A1 (en) * | 2010-10-01 | 2012-04-05 | Robert Bosch Gmbh | Method for starting internal-combustion engine, involves determining course of rotational speed of internal-combustion engine, where ignition point is determined as time by course |
DE102010041976B4 (en) | 2010-10-05 | 2014-08-28 | Robert Bosch Gmbh | Method for operating an internal combustion engine, electric machine of an internal combustion engine and engine control unit for controlling and / or regulating an internal combustion engine |
EP2673496B1 (en) * | 2011-02-09 | 2020-12-30 | Schaeffler Technologies AG & Co. KG | Method and device for the start of an internal combustion engine |
DE102012011993B4 (en) * | 2012-06-16 | 2021-03-18 | Volkswagen Aktiengesellschaft | Method and device for starting an internal combustion engine |
JP2015014278A (en) * | 2013-07-08 | 2015-01-22 | ヤマハ発動機株式会社 | Starter generator and control method therefor |
DE102013215857B4 (en) * | 2013-08-12 | 2022-06-30 | Bayerische Motoren Werke Aktiengesellschaft | Procedure for starting an internal combustion engine with a compressed air tank connected |
GB2520557B (en) | 2013-11-26 | 2020-07-08 | Ford Global Tech Llc | A method of controlling an engine of a motor vehicle |
DE102015225446A1 (en) * | 2015-12-16 | 2017-06-22 | Robert Bosch Gmbh | Method for starting a combustion engine without starting |
DE102018212943A1 (en) * | 2018-08-02 | 2020-02-06 | Robert Bosch Gmbh | Method and control device for operating a hybrid drive system of a hybrid vehicle |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3117144A1 (en) * | 1981-04-30 | 1982-11-18 | Fa. Emil Bender, 5900 Siegen | Starter device for a multi-cylinder spark-ignition engine |
US4462348A (en) * | 1981-08-31 | 1984-07-31 | Ford Motor Company | Engine starting system |
FR2569776B1 (en) * | 1984-09-06 | 1988-11-10 | Korsec Bernard | IMPROVEMENTS ON INTERNAL COMBUSTION ENGINES AND THEIR STARTING DEVICES |
SE467422B (en) * | 1990-04-23 | 1992-07-13 | Volvo Ab | DEVICE FOR THE SAFE START OF A COMBUSTION ENGINE |
FI913816A (en) * | 1991-08-12 | 1993-02-13 | Igor Mikhaltsev | FOER STARNING FOER STARNING AV FOERBRAENNINGSMOTOR |
DE4200606A1 (en) * | 1992-01-13 | 1993-07-15 | Helmut L Karcher | Starter for multicylinder direct-injection four-stroke engine - employs crankshaft angle detector and computer to open magnetic injector valve immediately on passage through TDC. |
AT398188B (en) * | 1992-05-05 | 1994-10-25 | Laimboeck Franz | DRIVE DEVICE FOR A MOTOR VEHICLE |
DE4439849A1 (en) * | 1994-11-08 | 1996-05-09 | Bosch Gmbh Robert | Starting system for IC engine |
JPH09304278A (en) * | 1996-05-16 | 1997-11-28 | Fuji Electric Co Ltd | Infrared gas analyser |
US9304278B1 (en) * | 2015-03-31 | 2016-04-05 | Corning Optical Communications LLC | Traceable cable with side-emitting optical fiber and method of forming the same |
-
1997
- 1997-09-19 DE DE19741294A patent/DE19741294A1/en not_active Ceased
-
1998
- 1998-08-17 WO PCT/DE1998/002390 patent/WO1999015787A1/en not_active Application Discontinuation
- 1998-08-17 DE DE59807064T patent/DE59807064D1/en not_active Expired - Lifetime
- 1998-08-17 KR KR1019997003779A patent/KR100739353B1/en not_active IP Right Cessation
- 1998-08-17 EP EP98949906A patent/EP0939859B1/en not_active Expired - Lifetime
- 1998-08-17 JP JP51840699A patent/JP4152449B2/en not_active Expired - Fee Related
- 1998-08-17 US US09/297,455 patent/US6202614B1/en not_active Expired - Lifetime
- 1998-08-17 BR BR9806180-1A patent/BR9806180A/en not_active IP Right Cessation
Non-Patent Citations (1)
Title |
---|
See references of WO9915787A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1999015787A1 (en) | 1999-04-01 |
JP4152449B2 (en) | 2008-09-17 |
KR100739353B1 (en) | 2007-07-18 |
DE19741294A1 (en) | 1999-03-25 |
JP2001506727A (en) | 2001-05-22 |
US6202614B1 (en) | 2001-03-20 |
EP0939859B1 (en) | 2003-01-29 |
DE59807064D1 (en) | 2003-03-06 |
BR9806180A (en) | 1999-10-19 |
KR20000068870A (en) | 2000-11-25 |
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