Adaptation method for optimized combustion of a fuel quantity injected into a cylinder of an internal combustion engine
AssigneeSiemens VDO Automotive Corporation
InventorsChristian Birkner, Joris Fokkelman, Karl Müller
Life of this patent
Estimating the term…
Abstract
In an adaptation method of an internal combustion engine for optimized combustion, the actually supplied cylinder-specific air masses are determined by determining the change in speed of the internal combustion engine within a thrust phase and by assigning these changes in speed to the cylinder-specific compression phases 20. This enables the fuel quantity to be injected to be more precisely adjusted to the cylinder-specific air mass available.
Claims18
An adaptation method of an internal combustion engine for optimized combustion of a fuel quantity injected into a cylinder, comprising the following steps:
- a) Recognizing a thrust phase of the internal combustion engine,
- b) Determining a temporal change in speed of the internal combustion engine within the thrust phase and assigning the temporal change in speed to a cylinder-specific compression phase of the internal combustion engine,
- c) Determining a cylinder-specific air/gas charge based on the temporal change in speed in the cylinder-specific compression phase and
- d) Adjusting a cylinder-specific fuel-air mixture based on the determined cylinder-specific air/gas charge.
An adaptation method of an internal combustion engine for optimized combustion of a fuel quantity injected into a cylinder, comprising the following steps:
- a) Determining a thrust phase of the internal combustion engine,
- b) Determining a temporal change in revolutions per minute (rpm) of the internal combustion engine within the thrust phase and assigning the temporal rpm change to a cylinder-specific compression phase of the internal combustion engine,
- c) Determining a cylinder-specific air/gas charge based on the temporal rpm change in the cylinder-specific compression phase and
- d) Adjusting a cylinder-specific fuel-air mixture based on the determined cylinder-specific air/gas charge.
A system for adapting of an internal combustion engine for optimized combustion of a fuel quantity injected into a cylinder, comprising:
- a) Means for determining a thrust phase of the internal combustion engine,
- b) Means for determining a temporal change in revolutions per minute (rpm) of the internal combustion engine within the thrust phase and assigning the temporal rpm change to a cylinder-specific compression phase of the internal combustion engine,
- c) Means for determining a cylinder-specific air/gas charge based on the temporal rpm change in the cylinder-specific compression phase and
- d) Means for adjusting a cylinder-specific fuel-air mixture based on the determined cylinder-specific air/gas charge.
Dependencies are inferred from the claim text.