Gallardo - The Transmission

Gallardo - The Transmission

The main feature is the permanent four-wheel drive transmission, based on the well-proven Lamborghini Viscous Traction system.

Such a system, which at constant speed on homogenous adhesion roads presents a traction force distribution around 30% front, 70% rear, is conceived to be "self-regulating", without the necessity of electronic controls. Indeed, thanks to the chosen characteristics of the viscous coupling, an intrinsic regulating closed loop operates in all conditions, varying the traction force distribution as a function of the dynamic weight distribution variations and of the adherence conditions.

Thus, during acceleration (or during climbing) on high adherence roads, the distribution will change favouring the rear axle (more rear traction force percentage, e.g. 80%, corresponding to the increased weight on the rear axle). However, if in these conditions the rear axle tends to lose adherence, more traction is immediately biased to the front, with the system tending to reach a point where the adhesions utilized by the two axles are identical.

The gearbox is 6 speed, using of the latest generation double and triple-cone synchronizers and optimised actuation linkage in order to achieve precision and velocity in shifting while ease of operation is guaranteed.

A robotized sequential gear shifting system, the Lamborghini e?gear, has also been developed, maintaining the basic mechanical gearbox unchanged. The main features of this system, available as an option, are:
- electronic control, interfaced via CAN bus to the engine control system and the ESP system
- actuation by paddles directly mounted on the steering column
- possibility to select different operating modes: normal, sport, automatic, low adherence
- very fast but smooth shifting, equal to or better than that which is achievable by a very good driver with a standard gearbox

The rear differential features a friction-type 45% limited slip, while the front differential slip limitation is controlled by the ABD (automatic brake differential) function of the ESP system.

The clutch is a reduced diameter double plate clutch. This is logical consequence of the Gallardo's engineering car concept definition, in order to keep the engine (and consequently the centre of gravity) as low as possible.

Name | Concept | Design | Engine | Electronics | Transmission | Space Frame & Body | Suspension & Brakes | Passive Safety | Performance | MY2004 Specifications

	*Gallardo*		Last updated Nov 22, 2003
			*Gallardo - The Transmission* The main feature is the permanent four-wheel drive transmission, based on the well-proven Lamborghini Viscous Traction system. Such a system, which at constant speed on homogenous adhesion roads presents a traction force distribution around 30% front, 70% rear, is conceived to be "self-regulating", without the necessity of electronic controls. Indeed, thanks to the chosen characteristics of the viscous coupling, an intrinsic regulating closed loop operates in all conditions, varying the traction force distribution as a function of the dynamic weight distribution variations and of the adherence conditions. Thus, during acceleration (or during climbing) on high adherence roads, the distribution will change favouring the rear axle (more rear traction force percentage, e.g. 80%, corresponding to the increased weight on the rear axle). However, if in these conditions the rear axle tends to lose adherence, more traction is immediately biased to the front, with the system tending to reach a point where the adhesions utilized by the two axles are identical. The gearbox is 6 speed, using of the latest generation double and triple-cone synchronizers and optimised actuation linkage in order to achieve precision and velocity in shifting while ease of operation is guaranteed. A robotized sequential gear shifting system, the Lamborghini e?gear, has also been developed, maintaining the basic mechanical gearbox unchanged. The main features of this system, available as an option, are: - electronic control, interfaced via CAN bus to the engine control system and the ESP system - actuation by paddles directly mounted on the steering column - possibility to select different operating modes: normal, sport, automatic, low adherence - very fast but smooth shifting, equal to or better than that which is achievable by a very good driver with a standard gearbox The rear differential features a friction-type 45% limited slip, while the front differential slip limitation is controlled by the ABD (automatic brake differential) function of the ESP system. The clutch is a reduced diameter double plate clutch. This is logical consequence of the Gallardo's engineering car concept definition, in order to keep the engine (and consequently the centre of gravity) as low as possible. Name \| Concept \| Design \| Engine \| Electronics \| Transmission \| Space Frame & Body \| Suspension & Brakes \| Passive Safety \| Performance \| MY2004 Specifications