Here after saveral days, we already explained some kind of engine systems like, Hidraulic Lash Valve Adjustment, Valve Timing Drive Development. And in this page i would like to share the another Engine System Like Rocker Arm Valve Train Components and FeaturesI. See explanation below :
Hidraulic Valve Lash Adjustment
Rocker Arm Valve Train Components and Features.
Hidraulic Valve Lash Adjustment
Features
ⓐ Roller type rocker arm with insert element
The main body of the roller type rocker arm ⓐ is preferebly made from alumunium, it is fitted with
- A needle bearing cam roller ① and
- A hydraulic insert elements with ⓑ or without ⓒ a contact pad.
- The valve lash is automatically compensated.
- Maintenance free.
- Very quiet running.
- Consistenly low exhaust emissions throughout the operating life.
- Very low valve train friction.
- Very little space required, since - all the valves can be actuated by a single camshaft.
Components
① Cam roller
② Oil duct
③ Support plate
④ Piston
⑤ Housing
⑥ Retainer cup (sheet steel or plastic)
⑦ Contact pad
Hydraulic insert elements with contact padⓑ
- Are supported on insert elements by means of a ball / socket joints
- Have a contact pad made from hardened steel
- Have very low contact pressures in the valve contact area.
Hydraulic insert elements without contact pad
- Require only short mounting space
- Have low mass ( low moving mass )
- Are highly cost effective
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| Rocker Arm Valve Train |