EP0931211A1 - Internal combustion engine control according to running time - Google Patents
Internal combustion engine control according to running timeInfo
- Publication number
- EP0931211A1 EP0931211A1 EP98948726A EP98948726A EP0931211A1 EP 0931211 A1 EP0931211 A1 EP 0931211A1 EP 98948726 A EP98948726 A EP 98948726A EP 98948726 A EP98948726 A EP 98948726A EP 0931211 A1 EP0931211 A1 EP 0931211A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- internal combustion
- control
- combustion engine
- initial start
- dimension
- 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
- 238000002485 combustion reaction Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 claims abstract description 12
- 239000000446 fuel Substances 0.000 claims abstract description 11
- 238000002347 injection Methods 0.000 claims description 10
- 239000007924 injection Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 5
- 230000007704 transition Effects 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 230000001419 dependent effect Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 230000015654 memory Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
- F02D41/06—Introducing corrections for particular operating conditions for engine starting or warming up
- F02D41/061—Introducing corrections for particular operating conditions for engine starting or warming up the corrections being time dependent
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
-
- 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
- F02D41/24—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means
- F02D41/2406—Electrical control of supply of combustible mixture or its constituents characterised by the use of digital means using essentially read only memories
- F02D41/2409—Addressing techniques specially adapted therefor
- F02D41/2422—Selective use of one or more tables
Definitions
- the invention relates to the selection of operating parameters of an internal combustion engine control system depending on the running time of the internal combustion engine.
- Route and / or time signal is controllable. This allows the maximum speed in the run-in phase to be limited to comparatively low values without reducing the speed spectrum that can be used for full power development when the vehicle is retracted.
- the limitation mentioned aims to protect the internal combustion engine from increased wear, which can go as far as destruction.
- An adaptation of control parameters to the wear of the engine is known from US Pat. No. 4,181,944, according to which the wear is detected via the combustion chamber pressure or is estimated from the signal from an odometer.
- the object of the invention is to further improve the known internal combustion engine control system, in particular with a view to fuel consumption and pollutant emissions. This object is achieved with the features of the independent claims. Advantageous developments of the invention are the subject of the dependent claims.
- the running-in state can advantageously be modeled by data which are present in the internal combustion engine control anyway or can be easily formed. Examples of such data are:
- Data records that are suitable for tracking or switching are, for example, the basic values for the
- the latter includes, for example, the extent of the speed increase as a function of the engine temperature and / or an injection start adjustment in the direction of earlier injection times.
- Figure 1 shows the technical environment of the invention.
- Figure 2 discloses various embodiments of the invention in functional block representation.
- FIG. 1 represents an internal combustion engine in a vehicle with a multiplicity 2 of sensors and a variety 3 of actuators.
- the sensors 2 supply input signals x to a control unit 4, which forms output signals y for actuating the actuators 3.
- the variety of sensors includes, for example, means for determining the amount of intake air, the throttle valve position, the speed, the driving speed, the distance traveled and the like.
- the variable x represents the variety of signals supplied by these sensors.
- the variable y represents the variety of the manipulated variables, for example the output injection pulse widths for controlling injection valves, the output ignition signals and output control commands for an electronically controlled power actuator, for example a throttle valve.
- FIG. 2a shows a first exemplary embodiment of the invention as a functional block representation of the control device 4 according to the invention.
- Blocks 2a and 2a2 represent means for providing output variables y as a function of input variables x. These blocks can be implemented as characteristic curves or map memories or as computing means which depend on y x Calculate using other data if necessary.
- the data record 2a is matched to the conditions, in particular the increased loss of friction loss of a new engine, while the data record 2a2 is adapted to the conditions of a run-in engine.
- Switch 2a3 can be used to switch from one data set to the other.
- the switch 2a3 is actuated by the block 2a4, to which at least one signal from the x group and / or a signal from the y group is fed.
- block 2a4 forms a measure L for the mileage of the engine, or for the decreasing friction power requirement of the engine with increasing operating time and compares this measure with a predetermined threshold value. Running through the threshold value then triggers an actuation of the switch 2a3, which then transmits the second data record 2a2 to the
- FIG. 2b shows a second embodiment of the invention. This is characterized by a constant transfer of data record 2a to data record 2a2.
- a weighting factor F (L) is first read from block 2bl and in block 2b3 multiplied by the difference yl-y2, which is formed in block 2b2.
- the difference weighted by F is then added in block 2b4 to the control signal y2.
- F is a number that steadily decreases from 1 to 0 with increasing L, i.e. with increasing engine mileage.
- a post-start mixture enrichment is active as long as the value of the post-start counter deviates from zero.
- the start counter is incremented when the post-start counter reaches 0.
- the start counter is marked with a applicable threshold compared. If the value of the start counter is less than the threshold, a new motor with high friction output is concluded. In this case, factors from sentence 1 are entered for the post-start and warm-up mixture. If the start counter has exceeded the threshold, then the engine already has a certain running time and thus reduced friction. Now the mixture factor set 2 has to be included. Compared to the conventional programs, by evaluating a start counter or by another modeling of the
- Running-in state it is possible to take into account the friction power of the motor and thus the running time.
- the evaluation of the start counter is particularly inexpensive and models the running-in condition well, since the starting processes make a significant contribution to running-in.
- the running-in engine can be supplied with fuel according to its needs and the design no longer has to be based on the new engine with high friction as a worst-case scenario. This allows exhaust emissions and fuel consumption to be reduced in the post-start and warm-up phases.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19733763 | 1997-08-05 | ||
DE19733763A DE19733763A1 (en) | 1997-08-05 | 1997-08-05 | Runtime-dependent internal combustion engine control |
PCT/DE1998/002243 WO1999007986A1 (en) | 1997-08-05 | 1998-08-05 | Internal combustion engine control according to running time |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0931211A1 true EP0931211A1 (en) | 1999-07-28 |
EP0931211B1 EP0931211B1 (en) | 2003-06-04 |
Family
ID=7837998
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98948726A Expired - Lifetime EP0931211B1 (en) | 1997-08-05 | 1998-08-05 | Internal combustion engine control according to running time |
Country Status (6)
Country | Link |
---|---|
US (1) | US6196196B1 (en) |
EP (1) | EP0931211B1 (en) |
JP (1) | JP2001502032A (en) |
KR (1) | KR20000068683A (en) |
DE (2) | DE19733763A1 (en) |
WO (1) | WO1999007986A1 (en) |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19943068C2 (en) * | 1999-09-09 | 2002-12-05 | Zahnradfabrik Friedrichshafen | Method for limiting engine cranking |
DE10333440A1 (en) * | 2003-07-23 | 2005-02-10 | Robert Bosch Gmbh | Method and device for operating a vehicle |
DE102004004382B4 (en) * | 2004-01-29 | 2007-03-01 | Bayerische Motoren Werke Ag | Method for reducing the wear of power-related actuators of a motor vehicle |
CN103415728B (en) * | 2011-03-08 | 2016-03-02 | 舍弗勒技术股份两合公司 | Method for controlling a drive train |
DE102012206381B4 (en) * | 2012-04-18 | 2019-07-25 | Mtu Friedrichshafen Gmbh | A method for controlling a Registeraufladung an internal combustion engine with an engine and an exhaust gas turbocharger and with a transmission, control device and internal combustion engine |
AT517111B1 (en) | 2015-06-29 | 2016-11-15 | Ge Jenbacher Gmbh & Co Og | Internal combustion engine with a control device |
DE102018222510A1 (en) | 2018-12-20 | 2020-06-25 | Audi Ag | Method for operating an internal combustion engine and corresponding internal combustion engine |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4074648A (en) * | 1976-10-18 | 1978-02-21 | Sperry Rand Corporation | Adaptive autopilot for marine vessels |
JPS5420203A (en) | 1977-07-15 | 1979-02-15 | Hitachi Ltd | Combustion control equipment of engine |
DE2800433A1 (en) * | 1978-01-05 | 1979-07-19 | Bosch Gmbh Robert | DEVICE FOR LIMITING THE SPEED OF A COMBUSTION ENGINE |
US4592331A (en) * | 1983-09-23 | 1986-06-03 | Sonex Research Inc. | Combustion process for I.C. engine using a resonating air chamber in a reciprocating piston to induce closed organ pipe resonance in the combustion chamber |
DE3537996A1 (en) | 1985-10-25 | 1987-05-07 | Bosch Gmbh Robert | START CONTROL FOR FUEL INJECTION SYSTEMS |
FR2616481A1 (en) * | 1987-06-12 | 1988-12-16 | Hamon Francois | Internal combustion engine electronic valve-control device and methods of implementation |
SU1615763A1 (en) | 1988-08-10 | 1990-12-23 | Предприятие П/Я Г-4257 | Device for monitoring and registering machine performance |
US5617836A (en) * | 1995-10-04 | 1997-04-08 | Ford Motor Company | Engine control system for producing and responding to an index of maturity of adaptive learing |
US5968107A (en) * | 1997-10-31 | 1999-10-19 | Cummins Engine Company, Inc. | System and method for engine parameter trending |
-
1997
- 1997-08-05 DE DE19733763A patent/DE19733763A1/en not_active Withdrawn
-
1998
- 1998-08-05 KR KR1019997002818A patent/KR20000068683A/en not_active Application Discontinuation
- 1998-08-05 WO PCT/DE1998/002243 patent/WO1999007986A1/en not_active Application Discontinuation
- 1998-08-05 JP JP11511548A patent/JP2001502032A/en not_active Withdrawn
- 1998-08-05 DE DE59808619T patent/DE59808619D1/en not_active Expired - Lifetime
- 1998-08-05 US US09/269,774 patent/US6196196B1/en not_active Expired - Fee Related
- 1998-08-05 EP EP98948726A patent/EP0931211B1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9907986A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59808619D1 (en) | 2003-07-10 |
DE19733763A1 (en) | 1999-02-11 |
EP0931211B1 (en) | 2003-06-04 |
JP2001502032A (en) | 2001-02-13 |
KR20000068683A (en) | 2000-11-25 |
WO1999007986A1 (en) | 1999-02-18 |
US6196196B1 (en) | 2001-03-06 |
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