Some high-performance engine have two separate camshafts , one for each set of inlet and exhaust valves . These engines are known as dual overhead-camshaft ( ) engine .
A: DOHC
B: ESP
C: diesel
D: EFI
A: DOHC
B: ESP
C: diesel
D: EFI
举一反三
- If there are two camshafts in each cylinder head, we call the double overhead camshaft (DOHC), one responsible for intake, the other for exhaust as shown in Fig.2-8b．
- What is the purpose of the intake/exhaust valves in a diesel engine? （）
- In a two-stroke engine that uses a camshaft, each valve is opened _____ for every rotation of the crankshaft; in these engines, the camshaft rotates at the same speed as the crankshaft.In a four-stroke engine, the valves are opened only half as often; thus, _____ of the crankshaft occur for each rotation of the camshaft. A: once ... two full rotations B: twice ...two full rotations C: once ... one full rotation D: twice ... one full rotation
- Which of the following engines has no significant effects on energy saving and emission reduction?_____ A: Electronic-controlled injection diesel engine B: Gas turbine C: Gas engine D: Dual fuel engine
- A diesel engine with a combustion chamber located between the crowns of two pistons is known as a/an （）.