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Cylinder head and valves 21 Cylinder heads 22 Combustion chambers 24 Engine valves 26 Valve trains for OHV engines 30 Hydraulic valve lifters for OHV engines 31 Valve trains for OHC engines 32 Hydraulic lash adjusters for OHC engines 33 Camshafts 34 Camshaft drives and timing 35 Drives for DOHC 39 Tensioners and dampers 40 Variable valve timing 41 Valvetiming diagram 44 Engine illustrations 45 Technical terms 45 Review questions 46
... two or more cylinder heads, each enclosing some of the cylinders V-type engines and horizontally opposed engines have a separate cylinder head for each bank of cylinders Cylinder- head casting... valve Cylinder head with double overhead camshafts and pivot-type hydraulic lash adjusters HYUNDAI 021-048_May 2chap 02 13/9/06 3:24 PM Page 35 chapter two cylinder head and valves 35 Double overhead... engines Each cylinder of a DOHC engine has four valves – two intake and two exhaust valves One camshaft is used for the intake valves and the other for the exhaust valves A cylinder head with two