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US 6,480,776 B1Granted
Method and apparatus for controlling an automatic gearbox
AssigneeScania CV AB (pub)
InventorSven Stafner
Life of this patent
Estimating the term…
Abstract
A process and an arrangement for the control of an automated gearbox. Control is conducted by determining possible gear combinations for driving, determining the operating points for the gear combinations, determining the specific fuel consumption at the operating points, selecting the gear combination with the lowest specific fuel consumption and emitting a command signal for changing to the selected gear combination.
Claims10
A process for the control of an automated gearbox for an engine, the process comprising:
- determining operating power of the engine on the basis of a calculated running resistance at a prevailing running speed and in prevailing operating conditions of the engine;
- determining possible gear combinations for driving;
- monitoring possible gear combinations with respect to torque and speed of the engine;
- determining operating points for the possible gear combinations;
- determining specific fuel consumption at the operating points;
- selecting a gear combination with a lowest specific fuel consumption;
- and
- emitting a command signal for changing to the selected gear combination.
5 more elements
An arrangement for control of an automated gearbox for an engine, the arrangement comprising:
- a control unit which is operable to:
- determine drive power of the engine on the basis of a calculated running resistance at a prevailing running speed and in prevailing operating conditions of the engine;
- determine possible gear combinations for driving;
- monitor possible gear combinations with respect to torque delivered and permissible engine speed;
- determine operating points for the possible gear combinations;
- determine specific fuel consumption for the operating points;
- select the gear combination with a lowest specific fuel consumption;
- and
- emit a control signal for changing to the selected gear combination.
6 more elements
Dependencies are inferred from the claim text.