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Scania raises its game with construction drivelines
Page 18
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• by Peter Shakespeare The city of Marrakech at the foot of Morocco's High Atlas Mountains formed the stunning backdrop for Scania's latest new products designed to improve its construction chassis drivelines.
A new overdrive gearbox that enables construction vehicles to maintain green band engine revs at road cruising speeds will go into production in September 2003. The GRS0900 is an updated version of the 12+2-speed gearbox and provides a 0.81:1 overdriven 12th ratio. The new gearbox will be available with engines from 300 to 480hp, in combination with hub reduction axles (see below). New power-takeoffs for the GRS0900 gearbox will go into production in November. Scania claims that the gearbox offers theoretical fuel savings of up to 6% with a 40-tonne combination.
In order to protect transmissions in extreme conditions, Scania now offers two partly patented systems. The Electronic Clutch Saver—ECS—is a clutch protection kit that prevents drivers starting the vehicle in any gear higher than first. The kit is available through the Scania parts network and can be retrofitted in two hours. Electronic Transmission Saver--ETS—helps to protect the full driveline by limiting torque to a safe level in low gears while the vehicle is travelling below 18km/h. There was an opportunity to drive a fully loaded P124 6x4 tipper fitted with ETS at the launch and driving both on and off-road there was no loss of pulling power. ETS can be retrofitted in 15 minutes and will be available from June.
Another new product is Scania's compact hub-reduction axle.
Available at 11-tonnesR8P735—and 15-tonnes8BP835—the new designs also have an integrated lubrication system that fil
ters and feeds oil to all parts of the axle assembly and gearing.
The new lubrication system increases oil change intervals to 80,000km and a1sc ensures continuous lubrication even if the vehicle is operating on steep side slopes. The new 15-tonne axle also offers a 25kg weight saving and a 34rnm increase in ground clearance if used with disc brakes. The latest axles will be available in early in 2004 and the RBP835 will also be offered as a single driven axle.
Scania also outlined the technology it intends to employ in its Euro-4 engines. It says it will concentrate on exhaust gas re-circulation (EGR), although there will not be one solution, but a combination of technologies which will result in a bespoke solution particular to each engine type. The other systems Scania is employing are selective catalyst reduction (SCR), turbo compounding, highpressure common rail injection, electronic management and particulate filtration.
Scania indicated that due to the introduction of tax concessions in Germany for operating cleaner commercial vehicles, its competitors were forcing the pace in getting Euro-4 onto the market. The Swedish manufacturer told CMthat it hoped to launch its first Euro-4, 420hp engine during the autumn of 2004, but despite its partnership with Cummins (which has already revealed a 420hp Euro-4 engine) the engine would be a Scania product. The suggestion that a Euro-4 engine will be available in the 4-Series was not denied by Scania.