The combustion process of the new engine is based on the third generation Mercedes-Benz direct injection system which was introduced last year with the BlueDIRECT V6 and V8 engines. It will feature a Camtronic two-stage variable valve lift. The direct injection system pressure is up to 200 bar and is variably optimized according to the engine’s characteristic map.
Completely re-developed piezo-electric injectors allow up to five injections per power stroke for optimized mixture formation while the multi-spark ignition helps to ensure reliable combustion of the mixture.
According to Mercedes, the new 1.6-litre petrol unit is delivering “diesel levels” of torque, with a peak torque of 249Nm available at just 1,250 rpm. It delivers 154bhp at 5,000 rpm. In the C-Class application, the motor will be mated to the 7G-TRONIC Plus transmission. This is a blessing indeed as Mercedes is not giving us the 5-speed gearbox in the current C180 Kompressor.
With the introduction of the downsized C180 Blue Efficiency, I guess Mercedes will do away with the C180 Kompressor Blue Efficiency. The upgrading of the 1.6-litre C-Class couldn’t have been timelier as the new 1.6-litre BMW 318i will be making its debut soon.