Variable Lift Valve Train






The Variable Lift Valve Train adjusts valve performance irrespective of engine RPM to provide varying lift and timing of the valve. By varying the lift, air intake increases, which makes the fuel burn cleaner, and reduces the amount of emissions.

With better hydraulic valve performance, the hydraulic stroke is adjusted, more horsepower and torque are achieved, and a lower torque curve is produced. This results in the internal combustion engine running more efficiently at higher speeds.







Special features

  • Improved performance product for internal combustion engines
  • Increases horsepower
  • Increases torque
  • Improves engine performance
  • Increases torque curve
  • Increases fuel efficiency
  • Reduces emissions
  • Works for 4-stroke internal combustion engines






In the existing system, the variable valve lift train is the system that alters the timing of the valve lift event in an internal combustion engine. This system performs two different functions:

First, variable valve lift is mainly used to enhance performance. Instead of having one cam profile for the entire rev range, a VVL engine has two: low-lift and high-lift. The engine will use the low-lift cam to operate the valves, but under higher load, a solenoid switches the engine over to the to the high-lift cam (or cams), increasing valve travel and therefore, performance.

Second, variable valve timing is used mainly for emissions control. It allows the engine to advance or delay the valve timing using oil pressure. This allows for more control over how much air-fuel mixture is in the cylinder (less under light-load driving, more when power is needed), controlling temperature and emissions.

In this new Variable Lift Valve Train system, the duration of the valve cycle can be controlled infinitely as well as dramatically from idle to full RPM. Duration, as well as valve lift, is lower at low RPM.

There are two gains here; first, lower duration gives more low-end torque, and second, low lift does not require full compression of valve springs. This puts less load on the camshaft, which in turn, robs less horsepower from the crankshaft. As the RPMs increase, the duration can be changed to the exact optimal setting for that RPM, giving you an almost straight-across-the-board torque curve.



Materials needed to produce the Variable Lift Valve Train:

  • Camshaft
  • Solenoid
  • Valves
  • Valve springs
  • Retainers
  • Rocker arms
  • Shafts
  • Lifters
  • Push rods




The  Variable Lift Valve Train is covered by United States Utility Patent: 9,732,639










For additional information, licensing opportunities, and a full prospectus on the  Variable Lift Valve Train  contact:




VP of Business Development