The invention relates to a method for improved gear shifting of a vehicle having an Otto-engine and a vehicle transmission with a manually actuated clutch of the vehicle transmission, comprising the steps of: determining a first set of condition parameter values, said parameters comprising clutch position, requested engine torque and engine speed; determining if the first set of condition parameter values meet first predetermined conditions; if the first predetermined conditions of said first set of condition parameter values are met, activating a function for interrupting fuel provision of the engine before disengaging the vehicle transmission during gear shifting. The invention also relates also to system and a computer program product for implementing the method and a motor vehicle equipped with the system.

Provided is a control system (1) for a hybrid vehicle (8) which is configured to directly transmit an output of an internal combustion engine (2) to a driven wheel (17) via a lockup clutch (18) and transmit an output of an electric motor is to the driven wheel by disengaging the lockup clutch depending on an operating state of the vehicle. The control system is configured to activate a warning unit (36, 37) when the oil pressure is below a prescribed oil pressure threshold value and the rotational speed of the engine detected by the rotary encoder is higher than a rotational speed threshold value. The rotational speed threshold value is a first threshold value when the lockup clutch is fully disengaged, and a second threshold value higher than the first threshold value when the lockup clutch is fully engaged, being engaged and being disengaged.

A diagnostic system of a vehicle for diagnosing a drive belt of a continuously variable transmission. A diagnostic circuit detects or predicts a fault of the drive belt based on an operating parameter received from a sensor associated with the vehicle during a predetermined diagnostic period.

A power transfer assembly for a motor vehicle includes a clutch protection system to prevent damage to an actively-controlled multi-plate mode clutch of the power transfer assembly. The clutch protection system includes a transfer case control module (TCCM) and an engine control module (ECM) configured to regulate the distribution of torque applied from an engine to front and rear output shafts of the power transfer assembly. The TCCM is in operable communication with the engine control module ECM, wherein TCCM is configured to detect slip in the actively-controlled multi-plate friction clutch and to communicate with the ECM to selectively reduce the output torque of the engine in response to detected slip.

An in-vehicle controller includes processing circuitry. The processing circuitry stops injection of fuel under a preset fuel cutoff condition including a lockup clutch being in an engagement state. A request for raising heating performance of a heater core is a heater actuation request, and an amount of particulate matter deposited on a filter is a deposition amount. The processing circuitry controls the lockup clutch in a disengagement state when a heater actuation request is generated and the deposition amount is less than a preset deposition amount threshold. The processing circuitry controls the lockup clutch in the engagement state when the heater actuation request is generated and the deposition amount is greater than or equal to the preset deposition amount threshold.

A method for controlling an engine in a motor vehicle includes determining a theoretical inertia of a drivetrain during a change of an operating mode of the engine, detecting an actual inertia in the drivetrain during the change of the operating mode, and increasing a rotational speed of the engine in response to detecting the actual inertia. The method further includes detecting an inertia overcome, determining a difference between the theoretical inertia and the inertia overcome, and reducing the rotational speed of the engine if the difference becomes less than a threshold value.

An engine-driven working machine according to the present invention has a controller and a muffler. The controller is operated from starting of the engine in a rotational speed limitation mode in which the engine is prevented from rotating at a rotational speed that is higher than the predetermined limitation rotational speed. The controller forces to stop the engine, after a predetermined period has passed, during which the engine operates in the rotational speed limitation mode.

In some embodiments of the present disclosure, sensors mounted on a vehicle can allow opportunities for coasting to be predicted based on environmental conditions, route planning information, and/or vehicle-to-vehicle or vehicle-to-infrastructure signaling. In some embodiments of the present disclosure, these sensors can also predict a need for power and/or an end of a coast opportunity. These predictions can allow the vehicle to automatically enter a coasting state, and can predictively re-engage the engine and/or powertrain in order to make power available with no delay when desired by the operator.

A vehicle propulsion system includes a transmission having manually selectable gear ratios, a manually operable clutch for selectively connecting the transmission to an engine for receiving torque from the engine and transmitting that torque through the transmission for propelling the vehicle, a clutch position sensor that generates a clutch position signal and a controller that is programmed to receive the clutch position signal, determine an actual engine output torque, determine an actual clutch torque capacity value based upon the actual engine output torque and the clutch position signal, determine a difference between the actual clutch torque capacity value and a clutch torque capacity from a torque to position table corresponding to the clutch position signal, determine an adjusted clutch torque capacity based upon the determined difference, and control an operation of the engine based upon the adjusted clutch torque capacity.

A method for setting an idling speed of an internal combustion engine of a motor vehicle, in which the idling speed of the internal combustion engine is increased if a predetermined power request within an on-board power system of the motor vehicle is detected, wherein a generator for electrically supplying the on-board power system is driven by the internal combustion engine, and wherein the internal combustion engine is connected to a transmission of the motor vehicle, wherein the connection between the internal combustion engine and the transmission is disconnected, and/or a predetermined braking force is made available by means of at least one brake of the motor vehicle if the predetermined power request is detected.