- The maximum tolerances of the bearing system are tested for rotor dynamic stability beyond the maximum turbocharger operating speed. This means no bearing problems and a long turbo life.
- An analytical “test” that ensures that destructive shaft “critical speeds” are well out of the turbocharger operating range. For example, large wheels may require a large shaft diameter to avoid the “shafting bending” at critical speed.
- Multiple turbochargers are run on-engine under conditions designed to cause seal leakage. No significant leakage is allowed during these tests.
- • A turbocharger instrumented with thermocouples is taken beyond maximum operating temperature and shut down hard! Repeat the test four more times and make sure maximum temperatures stay within our strict limits to avoid oil “coking” or build up inside the center housing. This is particularly critical for high temperature gasoline applications.
- The entire operating range of both the compressor and turbine are mapped on one of our “Performance Gas Stands.” These test cells are calibrated to strict standards to assure accuracy and consistency.
- A 200-hour endurance test that cycles the turbocharger from low temperature to “glowing red” every 10 minutes. To ensure a long turbo life, no cracking of the turbine housing or distortion of the heat shroud is allowed. We have strict requirements for compressor and turbine blade natural frequency. This is critical on large trims where the blade must be stiff enough to withstand potentially damaging vibrations.
- We have strict requirements for compressor and turbine blade natural frequency. This is critical on large trims where the blade must be stiff enough to withstand potentially damaging vibrations.
- A measurement made to document the rotational inertia of our compressor and turbine wheels. Our products are known for their high flow / low inertia characteristics.
- A test that stresses the thrust bearing at extreme conditions. This test makes sure your world class turbocharger can tolerate the load you put in through..
- We will not sell compressor or turbine wheel casting that have not passed a strict “test to failure” cyclic fatigue test. We run tests on regular basis to ensure quality and to constantly improve our products.
- The entire turbocharger is vibrated on large shaker table. Vibration levels are monitored to ensure product durability.