Vehicle propulsion unit and method for controlling same
AssigneeClaas KGaA
InventorsNils Fredriksen, Detlev Brockschmidt
Life of this patent
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Abstract
A propulsion unit, preferably a propulsion unit for a utility vehicle, as well as a method for controlling same are disclosed. The propulsion unit comprises an engine, a transmission and a power take-off unit having a power take-off shaft. A first fraction of the engine output power is directed to the transmission, whereas a second fraction is directed to the power take-off shaft. At least one of the power fractions is detected by means of measuring units. The power fraction transmitted to the transmission is limited to a predetermined limit value. It is, therefore, possible to install a propulsion unit with an engine, the output power of which being higher than the admissible input power of the transmission.
Claims22
A propulsion unit comprising:
- an engine generating an output power;
- a transmission having an input and an output for driving vehicle wheels;
- power take-off means having a power take-off shaft;
- means for distributing said output power between said transmission input and said power take-off means such that a first fraction of said output power is directed to said transmission input whereas a second fraction of said output power is directed to said power take-off means;
- means for measuring at least one of said power output fractions, said measuring means generating an output signal;
- and
- means for limiting said first power output fraction in response to that output signal.
A utility vehicle having a propulsion unit comprising:
- an engine generating an output power;
- a transmission having an input and an output for driving vehicle wheels;
- power take-off means having a power take-off shaft;
- means for distributing said output power between said transmission input and said power take-off means such that a first fraction of said output power is directed to said transmission input whereas a second fraction of said output power is directed to said power take-off means;
- means for measuring at least one of said power output fractions, said measuring means generating an output signal;
- and
- means for limiting said first power output fraction in response to that output signal.
A method for controlling a propulsion unit having:
- an engine generating an output power;
- a transmission having an input and an output for driving vehicle wheels;
- power take-off means having a power take-off shaft;
- and
- means for distributing said output power between said transmission input and said power take-off means such that a first fraction of said output power is directed to said transmission input whereas a second fraction of said output power is directed to said power take-off means,
- wherein said method comprises the steps of:
- measuring at least one of said output power fractions;
- and
- limiting said first output power fraction to a predetermined limit value.
Dependencies are inferred from the claim text.