Method for operating a drive unit for a motor vehicle and corresponding drive unit
The method allows for precise fuel quantity adaptation during load changes in motor vehicle drive units by using crankshaft acceleration to adjust fuel quantities, addressing inefficiencies and discomfort in existing methods.
DE102020118173B4Active Publication Date: 2026-07-02AUDI AG
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- AUDI AG
- Filing Date
- 2020-07-09
- Publication Date
- 2026-07-02
Smart Images
Figure 00000000_0000_ABST
Abstract
Method for operating a drive unit for a motor vehicle, which has an internal combustion engine with a crankshaft and a vehicle transmission whose input shaft is connected to the crankshaft for drive purposes, wherein a fuel quantity adaptation is temporarily carried out to adjust a quantity of fuel supplied to a cylinder of the internal combustion engine, characterized in that the fuel quantity adaptation is carried out during a load change within the drive unit by controlling a fuel injector to introduce a target quantity of fuel into the cylinder, wherein a resulting acceleration of the crankshaft counteracting the load change is detected and used to calculate an actual quantity of fuel supplied to the cylinder.where a difference between the actual fuel quantity and the target fuel quantity is used to adjust the amount of fuel supplied to the cylinder of the internal combustion engine.
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