IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0637643
(2003-08-11)
|
우선권정보 |
DE-102 37 328(2002-08-14) |
발명자
/ 주소 |
- Bauer,Erwin
- Ellmer,Dietmar
- Lauer,Thorsten
|
출원인 / 주소 |
- Siemens Aktiengesellschaft
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
2 |
초록
▼
For an effectively working regulation of the combustion process in the HCCI mode, a modeled combustion process, to be described by internal variables of state, is formed by using process-influencing variables. Output variables of the actual and modeled combustion process are then used to regulate th
For an effectively working regulation of the combustion process in the HCCI mode, a modeled combustion process, to be described by internal variables of state, is formed by using process-influencing variables. Output variables of the actual and modeled combustion process are then used to regulate the process-influencing variables.
대표청구항
▼
The invention claimed is: 1. A method for regulating the combustion process of an internal combustion engine that can be operated with self-controlled self ignition (HCCI mode) at least under specific operating conditions, comprising: during operation with controlled self ignition, forming a modele
The invention claimed is: 1. A method for regulating the combustion process of an internal combustion engine that can be operated with self-controlled self ignition (HCCI mode) at least under specific operating conditions, comprising: during operation with controlled self ignition, forming a modeled combustion process described by internal variables of state from combustion process influencing variables based on thermodynamic cycle processes, and using the output variables of the modeled combustion process to regulate the process influencing variables. 2. The method according to claim 1, wherein the modeled combustion process is corrected by a comparison between the output variables of the actual and modeled combustion process. 3. The method according to claim 1, wherein the modeled combustion process is synchronized and calibrated by measurable internal variables of state. 4. The method according to claim 1, wherein, at least one of combustion curve, temperature curve, pressure curve, peak pressure, indicated average pressure, efficiency, combustion concentration point and internal energy entry is used as internal variables of state. 5. The method according to claim 1, wherein the modeled combustion process is formed based on cycle processes in the pressure/volume diagram and the temperature/entropy diagram. 6. The method according to claim 5, wherein, when modeling the cycle processes, a two-zone model is used, subdividing a load in the cylinder in a zone of unburned air/fuel mixture and a zone of burned air/fuel mixture. 7. The method according to claim 1, wherein, at least one of fuel injection volume, duration and point in time, external and internal exhaust gas re-circulation rate, exhaust gas counter pressure, variable inlet and outlet valve control, ignition support, air inlet temperature, fuel quality, and variable compression ratio is used as the process-influencing variables. 8. The method according to claim 1, wherein, at least one of rotational speed of the crankshaft, knock sensor signal, exhaust gas temperature, air/fuel ratio (lambda), content of harmful substance emissions (NOX, HC), and combustion chamber pressure is used as the output variables. 9. The method according to claim 8, wherein the knock sensor signal is used as a leading output signal. 10. The method according to claim 1, wherein, for regulating the process-influencing variables, the output variables of the actual combustion process are used in addition to the output variables of the modeled combustion process. 11. The method according to claim 1, wherein, at least one of efficiency of the combustion process, protection of the internal combustion engine, quiet, noise development, harmful substance emissions, and fuel consumption are used as the regulating criteria for regulating the process influencing variables. 12. The method according to claim 11, wherein the output variables of both the actual and modeled combustion processes are fed to a regulator that, based on reference presets corresponding to the regulating criteria, regulates the process-influencing variables. 13. The method according to claim 1, wherein a pilot control is provided for the process-influencing variables.
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