Starting and driving unit for an internal combustion engine of a motor vehicle
First Claim
1. A starting/driving unit for an internal combustion engine of a motor vehicle with at least two starting methods, which has a clutch between a crankshaft, the engine, and a vehicle transmission as well as an electric machine which is connected to the engine by way of the clutch, wherein each starting method is preceded by a start clearing phase in which when the clutch (K) is engaged, the crankshaft (KW) of the engine (VM) is rotated by the electric machine and in so doing, the starting conditions are detected in a starting control unit (STG) by means of a speed, a decision is made as to the subsequent operating phases (direct start phase, positioning phase, preinjection phase, impulse start phase) and their starting parameters are determined.
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Accused Products
Abstract
The invention relates to a starting/driving unit for an internal combustion engine (VM) of a motor vehicle with at least two starting methods, which has a clutch (K) between the crankshaft (KW), the engine (VM), and the vehicle transmission (FG) as well as an electric machine which is connected to the engine (VM) by way of the clutch (K). With the electric machine, the two starting methods can be executed in an optimal fashion solely by virtue of the fact that through rotation of the crankshaft by means of the electric machine, each starting method is preceded by a start clearing phase in which the starting conditions are detected when the clutch is engaged, a decision is made as to the subsequent operating phases (direct start phase, positioning phase, preinjection phase, impulse start phase) and their starting parameters are determined.
33 Citations
8 Claims
- 1. A starting/driving unit for an internal combustion engine of a motor vehicle with at least two starting methods, which has a clutch between a crankshaft, the engine, and a vehicle transmission as well as an electric machine which is connected to the engine by way of the clutch, wherein each starting method is preceded by a start clearing phase in which when the clutch (K) is engaged, the crankshaft (KW) of the engine (VM) is rotated by the electric machine and in so doing, the starting conditions are detected in a starting control unit (STG) by means of a speed, a decision is made as to the subsequent operating phases (direct start phase, positioning phase, preinjection phase, impulse start phase) and their starting parameters are determined.
Specification