A method for operating a multi-stable shift-by wire selector control system of a motor vehicle transmission. The multi-stable shift-by wire selector control system includes a multi-stable selector which is operable by the driver of the vehicle to select a respective one of the operating modes of the transmission, an arrangement of illuminated labels indicating the selector mode and an indexing mechanism for maintaining the immobilization of the selector in its different positions.

A method for operating a multi-stable shift-by wire selector control system of a motor vehicle transmission. The multi-stable shift-by wire selector control system includes a multi-stable selector which is operable by the driver of the vehicle to select a respective one of the operating modes of the transmission, an arrangement of illuminated labels indicating the selector mode and an indexing mechanism for maintaining the immobilization of the selector in its different positions.

A hydraulic system of a transmission includes a plurality of pressure control valves. A pilot force component and an actuating force component of additional pressure control valves are applicable in the direction of a first end position of a valve slide. A downstream pressure of the additional pressure control valves is applicable in the direction of a second end position of the valve slide. Clutch valves are configured to be brought into operative connection by a pilot-controlled valve unit with an area guiding pressure of a primary pressure circuit or with an additional valve unit. The additional valve unit is a pressure-limiting valve with a predefined pressure level adjusted upstream of the additional valve unit and connected downstream to a low-pressure area.

This vehicle control devices provided with: a travel segment determination unit 15 which determines a next travel segment, forwards in the travel direction of the vehicle, which has a different road slope from the current travel segment where the vehicle is currently traveling; a next gear stage selection unit 16 which, on the basis of the road slope of the next travel segment, selects a next gear stage, which will be the gear stage of the vehicle in the next travel segment; and a shift control unit 17 which upshifts to the next gear stage in the current travel segment in the case that the travel resistance in the next travel segment is less than the travel resistance of the current travel segment, the value obtained by subtracting the travel resistance of the vehicle in the current travel segment from the drive force at the current speed of the vehicle in the next gear stage is less than a first prescribed value, and the value obtained by subtracting the travel resistance of the vehicle in the next travel segment from the drive force at the current vehicle speed in the next gear stage is less than a second prescribed value.

A control apparatus for a vehicular transmission including at least one dog clutch each having a first dog member mounted on a first shaft such that the first dog member is rotated together with the first shaft, and at least one second dog member each mounted to be axially adjacent to the first dog member and rotatable relative to the first shaft, first gears each mounted to be rotatable relative to the first shaft and provided with the second dog member, second gear which are mounted such that the second gears are rotated together with a second shaft parallel to the first shaft, and which mesh with the respective first gears, and a shifting mechanism for selectively placing each dog clutch in an engaged or released state. The control apparatus includes: a first calculating portion for detecting to a rotary angular position of the first shaft, and calculating a rotary angular position of the first dog member on the basis of the detected rotary angular position of the first shaft; a second calculating portion for detecting a rotary angular position of the second shaft, and calculating a rotary angular position of each second dog member on the basis of the detected rotary angular position of the second shaft; and an engagement control portion for controlling the shifting mechanism on the basis of the rotary angular positions of the first and second dog members, for engagement of the first and second dog members with each other.

A control apparatus for a vehicular transmission including at least one dog clutch each having a first dog member mounted on a first shaft such that the first dog member is rotated together with the first shaft, and at least one second dog member each mounted to be axially adjacent to the first dog member and rotatable relative to the first shaft, first gears each mounted to be rotatable relative to the first shaft and provided with the second dog member, second gear which are mounted such that the second gears are rotated together with a second shaft parallel to the first shaft, and which mesh with the respective first gears, and a shifting mechanism for selectively placing each dog clutch in an engaged or released state. The control apparatus includes: a first calculating portion for detecting to a rotary angular position of the first shaft, and calculating a rotary angular position of the first dog member on the basis of the detected rotary angular position of the first shaft; a second calculating portion for detecting a rotary angular position of the second shaft, and calculating a rotary angular position of each second dog member on the basis of the detected rotary angular position of the second shaft; and an engagement control portion for controlling the shifting mechanism on the basis of the rotary angular positions of the first and second dog members, for engagement of the first and second dog members with each other.

A vehicle control device performing upshift to a forward gear stage in a current travel section in a case where: (1) the forward gear stage is higher than a current gear stage; (2) a travel resistance of a vehicle in the current travel section is greater than a driving force in a case of traveling at the forward gear stage; (3) a stall amount until the vehicle passes an end point of the current travel section in a case where the vehicle travels in the current travel section at the forward gear stage is equal to or smaller than a specified value; and (4) a value obtained by subtracting the travel resistance of the vehicle in a forward travel section from a driving force in a case where the vehicle travels in the forward travel section at the forward gear stage is equal to or greater than a predetermined value.

A vehicle control device performing upshift to a forward gear stage in a current travel section in a case where: (1) the forward gear stage is higher than a current gear stage; (2) a travel resistance of a vehicle in the current travel section is greater than a driving force in a case of traveling at the forward gear stage; (3) a stall amount until the vehicle passes an end point of the current travel section in a case where the vehicle travels in the current travel section at the forward gear stage is equal to or smaller than a specified value; and (4) a value obtained by subtracting the travel resistance of the vehicle in a forward travel section from a driving force in a case where the vehicle travels in the forward travel section at the forward gear stage is equal to or greater than a predetermined value.

A vehicle control device comprising: a balance gradient calculation unit configured to calculate a balance gradient that is a gradient at which a propulsive force of the vehicle and a resistance force applied to the vehicle are balanced when the vehicle travels in a gear-in coasting state in which an engine is connected to a gear and the vehicle travels without supplying fuel to the engine, in a case where a traveling state of the vehicle is a neutral coasting state; and a traveling control unit configured to: switch, based on the calculated balance gradient and a specified road gradient, the traveling state of the vehicle from the neutral coasting state to the gear-in coasting state in a case where the traveling state of the vehicle is the neutral coasting state; and end, the gear-in coasting state when determining that an end condition is satisfied.

A vehicle control device comprising: a balance gradient calculation unit configured to calculate a balance gradient that is a gradient at which a propulsive force of the vehicle and a resistance force applied to the vehicle are balanced when the vehicle travels in a gear-in coasting state in which an engine is connected to a gear and the vehicle travels without supplying fuel to the engine, in a case where a traveling state of the vehicle is a neutral coasting state; and a traveling control unit configured to: switch, based on the calculated balance gradient and a specified road gradient, the traveling state of the vehicle from the neutral coasting state to the gear-in coasting state in a case where the traveling state of the vehicle is the neutral coasting state; and end, the gear-in coasting state when determining that an end condition is satisfied.