Category: I.C. Engines

In precombustion chamber in diesel engine________________?

A. The shape and layout of the pistion crown, the inlet port, and the valve produce the turbulent effect of fuel mixture
B. Fuel is injected into an auxiliary chamber that is separated from the cylinder by an orifice or throat
C. Only a part of air charge is contained in an auxiliary chamber in which the fuel starts to burn with insufficient air which due to explosion tendency mixes thoroughly into main cylinder charge
D. There are no valves

Supercharging is the process of_____________________?

A. supplying the intake of an engine with air at a density greater than the density of the surrounding atmosphere
B. providing forced cooling air
C. injecting excess fuel for raising more load
D. supplying compressed air to remove combustion products fully
E. raising exhaust pressure