Vehicle speed control system
AssigneeDeere & Company
InventorsCarroll C. Kellum, Hadeel Taha
Life of this patent
Estimating the term…
Abstract
A method of controlling an engine and a transmission coupled to the engine. The method including the steps of receiving and proceeding. The receiving step receives a signal value from a sensor. The signal value is representative of a desired ground engaging device speed of a vehicle. The proceeding step proceeds along a shift path defined by a one-to-one correspondence between the signal value and the ground engaging device speed. The proceeding step includes the steps of controlling a speed of the engine and selecting of a gear of the transmission along the shift path dependent upon the signal value.
Claims20
A vehicle, comprising:
- a base unit;
- an engine carried by said base unit;
- a transmission having an input shaft coupled to said engine, said engine providing rotational power to said transmission at a rotational speed, said transmission having an output shaft, said transmission having a plurality of gear selections defining a corresponding plurality of ratios between said input shaft and said output shaft;
- at least one ground engaging propulsion device driven by said transmission;
- an operator input device producing a signal value representative of a desired speed of said at least one ground engaging propulsion device;
- and
- a controller for controlling the engine and the transmission, said controller being configured to receive said signal value and to proceed along a shift path defined by a one-to-one correspondence between said signal value and a ground engaging device speed value, said controller being further configured to control the engine speed and the gear selection of the transmission along said shift path dependent upon said signal value.
A method of controlling an engine and a transmission having a plurality of gears, the transmission being coupled to the engine, the method comprising the steps of:
- receiving a signal value from a sensor, said signal value being representative of a desired ground engaging device speed of a vehicle;
- and
- proceeding along a shift path defined by a one-to-one correspondence between said signal value and said ground engaging device speed, said proceeding step including the steps of controlling a speed of the engine and selecting one of said plurality of gears in the transmission along said shift path dependent upon said signal value.
Dependencies are inferred from the claim text.