Exam Question

With respect to VIT in fuel injection give your comments on the following statements.

(a) By using VIT 100% peak pressure is achieved at 85% rpm. Thus 100% power is achieved at 85% rpm. This results in fuel saving

(b) VIT is not possible nor used in alternator engines as they run at constant rpm

(c) Breakpoint is the point at which maximum brake horsepower is achieved

(d) VIT system can ensure the correct Pmax is achieved irrespective of the fuel used

(e) Electronically controlled engines do not have VIT