Volvo Lastvagnar Ab

Ab Volvo

Volvo Lastvagner Ab

Ronald Olsson

Sverker Alfredsson

Stig-Erik Johannesson

Vehicle gearbox with a control shaft rotatably and axially displacebly mounted transversely to the axial direction of the vehicle gearbox, the rotational movement of the control shaft from a neutral position effecting, via motion-transmitting elements, engagement of a gear speed. A lock element cooperating with the control shaft is coordinated with a sensor sensing the position of a clutch connected to the gearbox, and locks the control shaft in the neutral position when the clutch pedal is not depressed.

Motor vehicle gearbox

A vehicle gearbox includes a basic gearbox with a main shaft that is an input shaft to a high-low range gearset joined to the basic gearbox. The basic gearbox has a control shaft, which, rotated in either direction from a neutral position, engages a selected gear. The control shaft is coordinated with a lock-out device which is controlled by a first sensor, which senses the speed of the output shaft from the range gearbox, and a second sensor which senses the engaged range in the range gearbox. An operating device holds the lock-out device in a lock-out position which prevents rotation of the control shaft towards the position for the lowest synchronized gear in the basic box, when the vehicle speed exceeds a predetermined speed in the low range of the gearbox.

Growing community of inventors

Savedalen, Sweden

Ronald Olsson