But if the intake valves close here, there is too much air inside the cylinder when only a small amount of air is needed at lower engine loads. (greencarcongress.com)
The output of the alternator is increased during low engine load conditions, for example when decelerating, with the excess electrical energy stored in the car's battery. (motor-prime.com)
It is particularly effective in low engine load conditions, such as during city driving, Opel says. (greencarcongress.com)