New Hydraulic Cam Phaser Performance Test System

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  • The simulated performance test can adjust to a wide range of cam phaser designs
  • The cam phaser test stand will be beneficial for research and development on engine designs for improving fuel efficiency

SAKOR Technologies, a solutions provider in the area of high-performance dynamometer systems, has announced that it has given a performance test for validating designs of new hydraulic variable timing cam phaser systems. Powerful and flexible, the cam phaser test stand will be used for research and development on engine timing designs to improve engine fuel efficiency. Simulating an engine using an electric dynamometer is cleaner and safer than using an actual internal combustion engine and reduces the costs and time needed for cam phaser design testing.

Wide simulation range

The custom-built system has been designed for use with cam phasers driven by oil pressure. The test system simulates different engine designs, simulating cam torque pulses using two high-speed low inertia AccuDyne AC Dynamometers and the DynoLAB data acquisition and control system. One dynamometer drives the timing chain (thus acting as an engine), while the other simulates cam shaft torque pulses.

Parts for testing are mounted in a thermal chamber having temperatures ranging from -40 degrees Celsius to 150 degrees Celsius. This enables engineers to simulate temperatures encountered by those starting engines in all climates. The system controls oil pressure to advance or delay the timing of the cam shaft relative to the engine.

High-frequency operation

The SAKOR system features a 60-kilowatt dynamometer that can operate at up to 8500 revolutions per minute (rpm) to simulate the engine. A 235 kW ultra-low inertia dynamometer is used to simulate the high-frequency torque pulses found on a cam shaft. The test stand can be easily adjusted to accommodate a wide range of cam phaser designs. The DynoLAB data acquisition and control system provides a reliable, fully automated test procedures for all customer testing protocols.

“SAKOR is dedicated to helping customers design the next generation of fuel-efficient engines in ways that do not require huge expensive facilities to conduct testing of components,” said Randal Beattie, president of SAKOR. “To the best of our knowledge, ours is the first system capable of simulating dynamic cam shaft torque pulsing in real-time and in a clean lab environment.”


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