Method for determining a kiss point of a clutch
AssigneePunch Powertrain Psa E-Transmissions N.V.
InventorCasper Herman Jans
Life of this patent
Estimating the term…
Abstract
Method for determining a kisspoint of a clutch. A method is provided of determining a kisspoint of a clutch in a driveline of a vehicle comprising a. increasing a target clutch pressure of a clutch piston up to a first predetermined test target pressure, b. increasing the target clutch pressure up to an upper target pressure and subsequently keeping the target clutch pressure stable for a predetermined time interval, c. monitoring a parameter indicative for the filling of the clutch piston, e.g. the rotational speed of a pump, during the predetermined time interval, d. repeating steps a., b., and c. for at least one further predetermined test target pressure, and e. determining the kisspoint based on the monitored parameter indicative for the filling of the clutch piston.
Claims10
A method of determining a kisspoint of a clutch in a driveline of a vehicle comprising:
- a. increasing a target clutch pressure of a clutch piston up to a first predetermined test target pressure;
- b. increasing the target clutch pressure up to an upper target pressure and subsequently keeping the target clutch pressure stable for a predetermined time interval;
- c. monitoring a parameter indicative for the filling of the clutch piston during the predetermined time interval;
- d. repeating steps a., b., and c. for at least one further predetermined test target pressure;
- and
- e. determining the kisspoint based on the monitored parameter indicative for the filling of the clutch piston;
- wherein the parameter indicative for the filling of the clutch piston is a rotational speed of an electric motor of a pump providing fluid to the clutch piston.
Dependencies are inferred from the claim text.