Automotive Intelligence - the web for automotive professionals and car enthusiasts
July 16, 2008
45 kW and 52 kW petrol engines with micro hybrid drive (mhd) as standard
The smart micro hybrid drive (mhd) automatic start-stop function has proven itself since 2007, although to date it has only been available for the 52kW/71 bhp model. To reduce the fuel costs for the smart fortwo, the two petrol models with 45 kW/61 bhp and 52 kW/71 bhp engines are now being fitted with the start-stop automatic function as standard**. This reduces the consumption of both versions in the combined cycle by around eight percent (to 4.3* litres, NEDC). CO2 emissions are reduced to 103* grams per kilometre. In urban traffic with frequent stop-and-go situations savings of almost 20 percent are even possible. 7 out of 10 customers in Europewho opt for a petrol engine will now drive with this environmentally-friendly technology.
smart has realised the idea behind the automatic start-stop system in a particularly clever way: the control electronics shut down the engine as soon as the driver brakes and the vehicle's speed falls below 8 km/h - for example when approaching traffic lights.
The engine starts again in the fraction of a second as soon as the driver releases the brake pedal. In this way the fuel consumption is reduced even further. The smart fortwo's automated manual transmission is perfectly tuned to the automatic start-stop system. The driver only needs to accelerate and brake - no clutchwork or gear changing is ever needed. This fully automatic function of the smart fortwo with mhd technology makes it easy to save fuel and emissions.
Closed diesel particulate filter for the CO2 champion smart fortwo cdi
smart is also improving the environmental footprint of the diesel model in model year 2009 with a new closed diesel particulate filter instead of the open version that was previously used. The new system reduces the particulate mass in the exhaust gas to a minimum and, thanks to intelligent engine control, it is virtually maintenance-free with a long filter service life. With combined consumption of 3.4 litres per 100 kilometres (NEDC), the smart fortwo cdi with a 33kW/45 bhp engine continues to be the world's production car with the lowest consumption and, with emissions of 88g/km, it is still the CO2 champion. In future it will also hold a top position in terms of particulate emissions.
The updated smart fortwo models can be ordered from smart dealers now.
(July 11, 2008)