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US 10,919,534 B2Granted
Slip control method and arrangement for a driveline
AssigneeTransmission Cvtcorp Inc.
InventorsJonathan Guerin, Jean-Francois Dionne
Life of this patent
Estimating the term…
Abstract
A slip control method and arrangement for a driveline is described herein. The driveline includes a clutch that is so controlled as to slip when a torque higher than the usable torque attempts to pass through. Accordingly, the clutch prevents the prime mover from stalling.
Claims20
A method to control the slippage of a driveline including a prime mover having an output shaft, a clutch having an input connected to the output shaft of the prime mover and an output connectable to a load;
- the clutch having a controllable slippage level between its input and output via a controllable pressure applied thereonto, the slippage control method including:
- determining a usable torque of the prime mover;
- determining a slippage condition of the clutch and
- controlling the pressure applied to the clutch according to the determined slippage condition of the clutch so as to allow the usable torque to pass therethrough and to cause the clutch to slip should a torque between the input and output of the clutch be greater than the usable torque.
1 more element
A driveline including:
- a prime mover having an output shaft;
- a prime mover speed sensor measuring the rotational speed of the output shaft;
- a clutch having an input associated with the output shaft of the prime mover and an output;
- a clutch slip quantifier so configured as to detect the slippage condition of the clutch;
- a clutch controller controlling the level of torque allowed to pass through the clutch before slippage occurs therein;
- and
- a main controller associated with the prime mover speed sensor and with the clutch controller;
- the main controller being so configured as to determine a usable torque of the prime mover and to set the clutch controller as a function of the slippage condition of the clutch so that the clutch slips when a torque higher than the usable torque attempts to pass through the clutch.
5 more elements
A driveline including:
- a prime mover having an output shaft;
- a CVT having an input associated with the output shaft of the prime mover and an output;
- the CVT having a variable ratio;
- a clutch having an input associated with the output of the CVT and an output;
- a clutch slip quantifier so configured as to detect the slippage condition of the clutch;
- a clutch controller controlling the level of torque allowed to pass through the clutch before slippage occurs therein;
- and
- a main controller associated with the prime mover and with the clutch controller;
- the main controller being so configured as to determine a usable torque of the prime mover and to set the clutch controller as a function of the slippage condition of the clutch so that the clutch slips when a torque higher than the usable torque attempts to pass through the clutch.
6 more elements
Dependencies are inferred from the claim text.