Method for a more efficient use of a combustion engine in a vehicle

A vehicle comprising a computer programmed with program code for executing a method for a more efficient use of a combustion engine in the vehicle during driving of the vehicle, the vehicle comprising an automatic step geared transmission for automatic gear ratio adaptation of a gear ratio between an engine rotational speed and a rotational speed of driving wheels of the vehicle, the method comprising:

• sensing current engine rotational speed and engine rotational speed increase,
• estimating necessary minimum upshift engine rotational speed for a coming gear upshift;
• registering that engine rotational speed has stopped increasing without reaching the minimum upshift engine rotational speed, and where the engine rotational speed stops increasing at a first engine rotational speed within a predetermined distance of a maximum engine rotational speed where engine efficiency at the first engine rotational speed is below a first predetermined efficiency, and
• automatically controlling engine output torque in order to limit the engine rotational speed to a first predetermined engine rotational speed where engine efficiency at the first predetermined engine rotational speed is above a second predetermined efficiency that is above the engine efficiency at the first engine rotational speed.

A vehicle comprising a computer comprising a non-transitory computer readable medium comprising program code for executing a method for a more efficient use of a combustion engine in the vehicle during driving of the vehicle, the vehicle comprising an automatic step geared transmission for automatic gear ratio adaptation of a gear ratio between an engine rotational speed and a rotational speed of driving:

• wheels of the vehicle, comprising:
• sensing current engine rotational speed and engine rotational speed increase,
• estimating necessary minimum upshift engine rotational speed for a coming gear upshift;
• registering that the engine rotational speed has stopped increasing without reaching the minimum upshift engine rotational speed, and where the engine rotational speed stops increasing at a first engine rotational speed within a predetermined distance of a maximum engine rotational speed where engine efficiency at the first engine rotational speed is below a first predetermined efficiency, and
• automatically controlling engine output torque in order to limit the engine rotational speed to a first predetermined engine rotational speed where engine efficiency at the first predetermined engine rotational speed is above a second predetermined efficiency that is above the engine efficiency at the first engine rotational speed.

A vehicle comprising a computer comprising a non-transitory computer program product directly loadable into an internal memory in the computer, which computer program product comprises a computer program for executing a method for a more efficient use of a combustion engine in the vehicle during driving of the vehicle, the vehicle comprising an automatic step geared transmission for automatic gear ratio adaptation of a gear ratio between an engine rotational speed and a rotational speed of driving wheels of the vehicle, comprising:

• sensing current engine rotational speed and engine rotational speed increase,
• estimating necessary minimum upshift engine rotational speed for a coming gear upshift;
• registering that the engine rotational speed has stopped increasing without reaching the minimum upshift engine rotational speed, and where the engine rotational speed stops increasing at a first engine rotational speed within a predetermined distance of a maximum engine rotational speed where engine efficiency at the first engine rotational speed is below a first predetermined efficiency, and
• automatically controlling engine output torque in order to limit the engine rotational speed to a first predetermined engine rotational speed where engine efficiency at the first predetermined engine rotational speed is above a second predetermined efficiency that is above the engine efficiency at the first engine rotational speed.