Lamborghini revealed today the details and photos of its all-new V12 engine as well as its new ISR (Independent Shifting Rod) transmission.
The new powertrain will enter production early 2011, and will be available on the new Lamborghini Murcielago successor a.k.a. Aventador a.k.a. Urus/Jota. As expected, the new twelve-cylinder engine with 6.5 liter displacement delivers 700 hp or 525 kW, as well as a maximum torque of 690 Newton meters.
This engine will be mated to the new ISR (Independent Shifting Rod) automated manual gearbox that combines minimal shift times and everyday usability with low weight and dimensions.
According to Lamborghini, the new gearbox is with almost 50 percent shorter than with a dual-clutch transmission, and combines extremely fast shift times with the benefits of manual shifting.
An essential part of the Lamborghini brand, past or future, is its twelve-cylinder engine. Take the 350 GT for example. It was the first model made by Ferruccio Lamborghini and first released to the market back in 1964. Its twelve-cylinder engine was considered as groundbreaking for its time.
The other super sports car models that followed include the Countach, Diablo, Espada, Miura, and the Murciélago, all made in Sant'Agata, use V12 engines, and already have a place in automotive history as legends. The possible new milestone in the brand’s history is just around the corner.
Starting from scratch, the company’s research and development engineers have created a new high performance power plant. The result is a package that while compact is powerful and high-revving. It is also lightweight, weighing merely 235 kilograms, with each kilogram of the engine’s weight exhibiting about 3 hp of maximum output.
The engineers have also managed to pair the twelve-cylinder engine with the Lamborghini ISR transmission. Clearly, this drive unit is distinct given that the super sports cars world is a competitive one.
Furthermore, engineers made sure that the development target was apparent from the start which was to have the best emotional gearshift feel. The manual gearbox manages to combine the fast shift time, which is shorter by 50% compared to a dual-clutch transmission, with the benefits offered by manual shifting as it relates to a compact dimension and low weight, factors that are important for a super sports car.
The low shift times have been made possible with how the transmission was designed. This is referred to as the Independent Shifting Rod or ISR.
Most conventional gearboxes come in series but this one happens in an almost parallel manner. For example when one of the shifting rods is moved out from one gear, a second shifting rod manages to engage the next. Weighing at 79 kilograms, the transmission offers a distinct advantage compared to the heavier comparable DSG transmissions.