BMW revealed a prototype of its 1-series that is powered by a water-injected turbo petrol unit, at the BMW Group Innovation Days 2015.
The prototype gets a 1.5-litre three-cylinder turbo petrol engine that makes 215bhp. BMW has explained the working of the engine saying that water is injected as a fine spray, it evaporates and extracts energy from its surroundings, thereby reducing combustion temperatures in the engine by
25° C.
The reduced temperatures create a cooling effect, avoiding the need to inject additional fuel when operating at or near full throttle. A point to be noted is that, even the BMW M4 MotoGP safety car draws water from a five-litre tank in the boot. The direct water-injection system in this 1-series prototype doesn’t need topping up during everyday use, as the water supply is continuously replenished by the recovery of condensed water from the air conditioning system.
Dipan Sur
Viraaj Bhatnagar
Punch Under 10 Lakhs: Good Buy?
