Volvo Construction Equipment Ab

Jan Dersjö

Per Anders Mattsson

Rico Resch

Mirko Leesch

Mathias Lehikoinen

Jörg Müller

Mats Åkerblom

Björn Brattberg

Johnny Arne

Mikael Lindberg

Lars Arkeborn

Erik Ljungars

The invention relates to a method of controlling a working machine. The method includes monitoring a detection region behind the working machine by means of a rear detection device; and determining whether the working machine is traveling forward or in reverse. The method further includes disregarding an object in the detection region detected by the rear detection device when the working machine is traveling forward. The invention also relates to a control system for controlling a working machine having a rear detection device arranged to monitor a detection region behind the working machine. The invention also relates to a working machine.

Method of controlling working machine, control system and working machine

A method is provided for controlling a gear shift from a forward gear to a reverse gear in a transmission arrangement, the method including the steps of: positioning a first locking mechanism and a first connecting mechanism at least in a partially engaged state for reducing a rotational speed of a planet carrier of a second planetary gear set; and positioning a second locking mechanism in an engaged state when a rotational speed of the planet carrier of the second planetary gear set is below a predetermined threshold limit.

Method for controlling a gear shift in a transmission arrangement

A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the ring gear of the first planetary gear set and the input shaft are operatively connected to each other; the sun gear of the first planetary gear set, and the sun gear of the second planetary gear set are operatively connected to each other; the planet carrier of the second planetary gear set and the ring gear of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set is operatively connected to the transmission housing; the sun gear of the third planetary gear set and the sun gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear set and the output shaft are operatively connected to each other.

Transmission arrangement for a vehicle

A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the sun gear of the first planetary gear set and the input shaft are operatively connected to each other; the ring gear of the first planetary gear set and the ring gear of the second planetary gear set are operatively connected to each other; the planet carrier of the second planetary gear set and the sun gear of the third planetary gear set are operatively connected to each other; the sun gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set and the ring gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear set and the output shaft are operatively connected to each other.

A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein two of the sun gear, the planet carrier and the ring gear of the fourth planetary gear set are each operatively connected to a respective one of the input shaft, the sun gear, the planet carrier and the ring gear of the third planetary gear set.

A transmission arrangement for a vehicle includes a first, a second, a third, and a fourth planetary gear set including a sun gear, a planet carrier and a ring gear, respectively, wherein the transmission arrangement further includes a transmission housing, an input shaft and an output shaft, wherein the ring gear of the first planetary gear set and the input shaft are operatively connected to each other; the planet carrier of the first planetary gear set and the planet carrier of the second planetary gear set are operatively connected to each other; the sun gear of the first planetary gear set and the ring gear of the third planetary gear set are operatively connected to each other; the ring gear of the second planetary gear set and the planet carrier of the third planetary gear set are operatively connected to each other; the planet carrier of the third planetary gear set and the sun gear of the fourth planetary gear set are operatively connected to each other; and the planet carrier of the fourth planetary gear set and the output shaft are operatively connected each other.

A method is provided for controlling a work machine during operation in a repeated work cycle including the steps of establishing a control strategy on the basis of at least one condition that varies in the course of the work cycle, and controlling at least one device in a work machine power transmission system in response to the established control strategy.

Growing community of inventors

Eskilstuna, Sweden

Jan Dersjö