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  • Improving Reciprocating Compressor Valve Life
    Compressor valves serves as check valves for the inlet and discharge passages of the cylinder and will open and close once for every revolution of the crankshaft. If the compressor is running at 500 rpm for 24 hours a day, the valves will open and close 720,000 times every day! Valves have
  • Getting torque-to-inertia right
    provides commutation and speed feedback for the drive controller. Crankshafts in running internal-combustion engines pulsate as well as rotate. This pulsation creates both primary and harmonic torsional stress on crankshaft-driven equipment such as superchargers, pumps, alternators, counterbalancers
  • F-150 Pickup Gets a New Heart
    forces gases out. A single-overhead cam is used for each cylinder bank. Traditionally, camshafts are permanently synchronized with the crankshaft so they operate valves at a specific point during combustion. However, the new powerplant uses variable-cam timing (VCT) that lets valves operate

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