TVIS Treadmill
TVIS may refer to: * T-VIS, which stands for ''Toyota Variable Induction System'', is a variable intake system designed by Toyota. * Treadmill with Vibration Isolation System is a treadmill which has been designed for use on the International Space Station. {{disambig ...
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T-VIS
Toyota Variable Induction System, or T-VIS, is a variable intake system designed by Toyota to improve the low-end performance of multi-valve engines. T-VIS is intended to improve the low-end torque of high-performance, four-stroke internal combustion engines - by changing the geometry of the intake manifold according to the engine rotation speed. The system uses two separate intake runners per cylinder, one being equipped with a butterfly valve that can either open or close the runner. All valves are attached to a common shaft which is rotated by a vacuum actuator outside the manifold. T-VIS does not actually keep one of the intake valves from opening or seal off the port for one valve.''Toyota Twin Cam''
p. 11 The engine control unit (E ...
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