CN110594024B - Method and control device for operating a reciprocating piston internal combustion engine - Google Patents
Method and control device for operating a reciprocating piston internal combustion engine Download PDFInfo
- Publication number
- CN110594024B CN110594024B CN201910503521.1A CN201910503521A CN110594024B CN 110594024 B CN110594024 B CN 110594024B CN 201910503521 A CN201910503521 A CN 201910503521A CN 110594024 B CN110594024 B CN 110594024B
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- Prior art keywords
- internal combustion
- combustion engine
- load
- reciprocating piston
- compression ratio
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D15/00—Varying compression ratio
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
- F02D2200/101—Engine speed
-
- 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
Abstract
The invention relates to a method for operating a reciprocating piston internal combustion engine with a variable compression ratio, wherein the reciprocating piston internal combustion engine is operated at a high compression ratio from an idle speed up to a maximum speed and at low load up to medium load, and is operated at a low compression ratio from an idle speed up to medium speed and from medium load up to maximum load, wherein the reciprocating piston internal combustion engine is operated at a high compression ratio from medium speed and from medium load up to maximum load. The specific power during stoichiometric combustion is increased by the operation of the reciprocating piston internal combustion engine according to the invention. The invention also relates to a control device.
Description
Technical Field
The invention relates to a method for operating a reciprocating piston internal combustion engine.
Background
For a technical environment of an internal combustion engine with a variable compression ratio, reference is made, for example, to german laid-open patent document DE102016200190A1. A method for monitoring the function of a device for variably adjusting the cylinder compression of a reciprocating piston internal combustion engine is described by said publication. The method comprises the following steps:
determining a value of a motor parameter indicative of the position of the internal combustion engine under defined cylinder compression,
-comparing the determined value with another value of the motor parameter, and
-based on the result of said comparison,
-determining: the means for variably adjusting cylinder compression functions properly.
In addition, reference is made to German laid-open document DE10010032487A1. A method for operating a reciprocating piston internal combustion engine of a motor vehicle is also known from the publication. In this reciprocating piston internal combustion engine, the compression ratio of at least one cylinder in which the piston is received in a translatably guided manner can be adjusted by means of an adjusting device corresponding to this cylinder. The control device checks a predefined functionality by means of at least one detection device. When it is ascertained by means of the test that the detected actual functionality deviates from the predefined functionality, the control device is switched from normal operation to a defective operating state.
In addition, reference is made to International publication No. WO2016/016,191A1. In this patent application, a method for operating a reciprocating piston internal combustion engine is described, in which the effective length of a connecting rod in a cylinder is adjusted, wherein the compression ratio that can be adjusted thereby is changed at least during operation of the reciprocating piston internal combustion engine and is coordinated therewith by means of at least one further component of the reciprocating piston internal combustion engine.
The compression ratio of a gasoline internal combustion engine is limited due to abnormal combustion in a low load range. During this time a system is described which enables the compression ratio to be adjusted during operation of the internal combustion engine as described above. Typically, the system is used to adjust a high compression ratio in a low load range to improve efficiency and a low compression ratio in a high load range to improve combustion robustness to thereby maintain a small boost pressure requirement or an early combustion center of gravity position.
Since only small expansion of the working gas occurs at low compression ratios and thus an increased exhaust gas temperature occurs relative to expansion at high compression ratios. A relatively early combustion center of gravity position also occurs at a low compression ratio. This results in measures for reducing full-load lubrication (e.g. the miller combustion method) or water injection having only limited potential.
Disclosure of Invention
The object of the invention is to provide a measure by means of which the exhaust gas temperature can be reduced at medium to high loads and from medium to high speeds.
To this end, the invention proposes a method for operating a reciprocating piston internal combustion engine with a variable compression ratio, wherein the reciprocating piston internal combustion engine
From idle speed up to maximum speed and at low to medium load at high compression rate, and
from idle speed up to medium speed and from medium load up to maximum load operating at low compression rate,
wherein the reciprocating piston internal combustion engine
Starting from the intermediate rotational speed up to the maximum rotational speed and starting from the intermediate load up to the maximum load, operating at a high compression rate.
The invention also proposes a control device arranged for operating a reciprocating piston internal combustion engine with a variable compression ratio, wherein the control device is arranged to:
running the reciprocating piston internal combustion engine at a high compression ratio from idle speed up to maximum speed and at low load up to medium load,
-operating the reciprocating-piston internal combustion engine at low compression ratio from idle speed up to medium speed and from medium load up to maximum load, and
starting from a medium rotational speed up to a maximum rotational speed and starting from a medium load up to a maximum load, the reciprocating internal combustion engine is operated at a high compression rate.
The possibility of using a VCR (variable compression ratio) system according to the invention is proposed to increase the compression ratio at full load and at high rotational speeds of the reciprocating piston internal combustion engine in the range close to full load in order to reduce the exhaust gas temperature by expanding the expansion and thus also to increase the effect of the combustion process (for example the miller combustion process or water injection) in terms of reducing the exhaust gas temperature or reducing lubrication.
By means of the method according to the invention, the specific power of the internal combustion engine can be increased during stoichiometric combustion (λ=1) or the water consumption can be reduced during the combustion process using water injection. This results in a substantial reduction of CO 2 Emissions and helps to comply with RDE regulations (actual driving emissions: real Driving Emissions). In addition, the method according to the invention, as indicated above, results in a reduction of water consumption, which brings significant user benefits to itself (less replenishment of water) or a cost potential for internal combustion engine applications that utilize water injection. At the same time, the method according to the invention results in a greatly reduced fuel consumption.
Drawings
The invention is explained in detail below with the aid of the sole drawing.
Fig. 1 shows graphically an operating characteristic curve for an internal combustion engine.
Detailed Description
FIG. 1 is a schematic representation of a method forA common operating characteristic of reciprocating piston internal combustion engines. Illustrating torque M of an internal combustion engine on a Y-axis d (in Nm). The rotational speed n of the internal combustion engine (unit 1/min) is shown on the X-axis. The characteristic is divided into three general regions.
The first region 1 extends from a minimum rotational speed n of the reciprocating internal combustion engine min Extending up to a maximum rotational speed n of the reciprocating piston internal combustion engine max And from the minimum torque Md min Extending approximately up to medium torque Md mittel 。
In the diagram, the second region 2 is about the medium torque Md mittel Extends up to a maximum torque Md max And from the minimum rotation speed n min Extending approximately up to a medium rotational speed n mittel 。
In the diagram, the third region 3 is approximately from the medium rotational speed n mittel Extending up to a maximum rotational speed n max And about the medium torque Md mittel Extends up to a maximum torque Md max 。
In the first region 1, the reciprocating piston internal combustion engine is operated at a high compression ratio, as is known from the prior art, for improving efficiency.
In the second region 2, the reciprocating piston internal combustion engine is operated at a low compression ratio to avoid abnormal combustion.
In the third region 3, the internal combustion engine is operated according to the invention at a high compression ratio in order to achieve the advantages listed above.
The method according to the invention for operating a reciprocating piston internal combustion engine with a variable compression ratio is therefore provided, wherein the reciprocating piston internal combustion engine
At low load Md min Up to medium load Md mittel From idle rotation speed n min Up to a maximum rotational speed n max Operating at a high compression rate and,
from idle speed n min Up to medium rotation speed n mittel And from the medium load Md mittel Up to a maximum load Md max Operating at a low compression rate and,
-from a medium rotational speed n mittel Up to a maximum rotational speed n max And from the medium load Md mittel Up to a maximum load Md max Operating at high compression rate.
List of reference numerals
1.n min To n max 、Md min To Md mittel Ranges of (2)
2.n min To n mittel 、Md mittel To Md max Ranges of (2)
3.n mittel To n max 、Md mittel To Md max Ranges of (2)
Claims (2)
1. Method for operating a reciprocating piston internal combustion engine with variable geometric compression ratio, wherein the reciprocating piston internal combustion engine
From idle speed n min Up to a maximum rotational speed n max And at low load Md min Up to medium load Md mittel Operates at a high compression rate, and
from idle speed n min Up to medium rotation speed n mittel And from the medium load Md mittel Up to a maximum load Md max Operating at a low compression rate and,
characterized in that the reciprocating piston internal combustion engine
-from a medium rotational speed n mittel Up to a maximum rotational speed n max And from the medium load Md mittel Up to a maximum load Md max Operating at a high compression ratio, wherein the variable compression ratio system is arranged to increase the compression ratio at high rotational speeds of the reciprocating piston internal combustion engine at full load and in a range close to full load in order to reduce the exhaust gas temperature by expanding the expansion.
2. A control device arranged for operating a reciprocating piston internal combustion engine having a variable geometric compression ratio, characterized in that the control device is arranged to:
from idle speed n min Up to a maximum rotational speed n max And at low load Md min Until the middleEqual load Md mittel Is operated at a high compression ratio,
from idle speed n min Up to medium rotation speed n mittel And from the medium load Md mittel Up to a maximum load Md max Operating the reciprocating piston internal combustion engine at low compression ratio, and
-from a medium rotational speed n mittel Up to a maximum rotational speed n max And from the medium load Md mittel Up to a maximum load Md max The reciprocating piston internal combustion engine is operated at a high compression ratio, wherein the variable compression ratio system is arranged to increase the compression ratio at high rotational speeds of the reciprocating piston internal combustion engine at full load and in a range close to full load so as to reduce the exhaust gas temperature by expanding the expansion.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018209384.9A DE102018209384A1 (en) | 2018-06-13 | 2018-06-13 | Method for operating a reciprocating piston internal combustion engine |
| DE102018209384.9 | 2018-06-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110594024A CN110594024A (en) | 2019-12-20 |
| CN110594024B true CN110594024B (en) | 2023-08-08 |
Family
ID=68724554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910503521.1A Active CN110594024B (en) | 2018-06-13 | 2019-06-12 | Method and control device for operating a reciprocating piston internal combustion engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110594024B (en) |
| DE (1) | DE102018209384A1 (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1223319A1 (en) * | 2001-01-16 | 2002-07-17 | Nissan Motor Company, Limited | Combustion control system for spark ignition internal combustion engine with variable piston stroke characteristic mechanism and variable valve operating mechanism |
| JP2004278334A (en) * | 2003-03-13 | 2004-10-07 | Toyota Motor Corp | Change control of compression ratio in internal combustion engine |
| JP2010159683A (en) * | 2009-01-08 | 2010-07-22 | Nissan Motor Co Ltd | Internal combustion engine |
| JP2010281249A (en) * | 2009-06-04 | 2010-12-16 | Honda Motor Co Ltd | Internal combustion engine equipped with exhaust supercharger |
| CN102207037A (en) * | 2010-03-31 | 2011-10-05 | 马自达汽车株式会社 | Spark-ignition engine control method and system |
| CN102483002A (en) * | 2010-03-29 | 2012-05-30 | 丰田自动车株式会社 | Control device for vehicle |
| JP2012193635A (en) * | 2011-03-15 | 2012-10-11 | Nissan Motor Co Ltd | Device for controlling variable compression ratio internal combustion engine |
| JP2014163251A (en) * | 2013-02-22 | 2014-09-08 | Mazda Motor Corp | Spark ignition type engine with turbosupercharger |
| JP2017044128A (en) * | 2015-08-26 | 2017-03-02 | 日産自動車株式会社 | Control device for engine |
| CN107849992A (en) * | 2015-07-30 | 2018-03-27 | 日产自动车株式会社 | Display device |
| CN109555615A (en) * | 2017-09-27 | 2019-04-02 | 马自达汽车株式会社 | Engine with booster |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4134830B2 (en) * | 2002-07-11 | 2008-08-20 | 日産自動車株式会社 | COMPRESSION RATIO CONTROL DEVICE FOR INTERNAL COMBUSTION ENGINE |
| DE102004031288B4 (en) * | 2004-06-29 | 2017-07-13 | FEV Europe GmbH | Internal combustion engine with variable compression ratio and method for its operation |
| DE102010032487A1 (en) | 2010-07-28 | 2012-02-02 | Daimler Ag | Method for operating a reciprocating piston engine |
| CN106572768A (en) | 2014-07-30 | 2017-04-19 | 雀巢产品技术援助有限公司 | Dispenser with openable door |
| DE102014018897B3 (en) * | 2014-12-17 | 2016-01-21 | Audi Ag | Method for operating an internal combustion engine with a multi-joint crank mechanism with adjustment of an eccentric shaft |
| DE102016200190A1 (en) | 2015-10-12 | 2017-04-13 | Robert Bosch Gmbh | Method and function monitoring device for monitoring the function of a device for the variable adjustment of a cylinder compression in a reciprocating internal combustion engine |
-
2018
- 2018-06-13 DE DE102018209384.9A patent/DE102018209384A1/en active Pending
-
2019
- 2019-06-12 CN CN201910503521.1A patent/CN110594024B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1223319A1 (en) * | 2001-01-16 | 2002-07-17 | Nissan Motor Company, Limited | Combustion control system for spark ignition internal combustion engine with variable piston stroke characteristic mechanism and variable valve operating mechanism |
| JP2004278334A (en) * | 2003-03-13 | 2004-10-07 | Toyota Motor Corp | Change control of compression ratio in internal combustion engine |
| JP2010159683A (en) * | 2009-01-08 | 2010-07-22 | Nissan Motor Co Ltd | Internal combustion engine |
| JP2010281249A (en) * | 2009-06-04 | 2010-12-16 | Honda Motor Co Ltd | Internal combustion engine equipped with exhaust supercharger |
| CN102483002A (en) * | 2010-03-29 | 2012-05-30 | 丰田自动车株式会社 | Control device for vehicle |
| CN102207037A (en) * | 2010-03-31 | 2011-10-05 | 马自达汽车株式会社 | Spark-ignition engine control method and system |
| JP2012193635A (en) * | 2011-03-15 | 2012-10-11 | Nissan Motor Co Ltd | Device for controlling variable compression ratio internal combustion engine |
| JP2014163251A (en) * | 2013-02-22 | 2014-09-08 | Mazda Motor Corp | Spark ignition type engine with turbosupercharger |
| CN107849992A (en) * | 2015-07-30 | 2018-03-27 | 日产自动车株式会社 | Display device |
| JP2017044128A (en) * | 2015-08-26 | 2017-03-02 | 日産自動車株式会社 | Control device for engine |
| CN109555615A (en) * | 2017-09-27 | 2019-04-02 | 马自达汽车株式会社 | Engine with booster |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102018209384A1 (en) | 2019-12-19 |
| CN110594024A (en) | 2019-12-20 |
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