ROTOTEST RESEARCH INSTITUTE, RRI
The information below is republished with permission from Rototest Research Institute, RRI.
1) The history of horsepower
2) Physics
• Power and torque
• Calibration.
3) Accuracy – Repeatability
• Measurement chains
• Cylinder pressure
4) Test Conditions
5) Test & Measurements
• Steady state
• Acceleration with inertia load.
• Acceleration with road load
• Acceleration at constant rate.
• Minimum demands for professional performance measurement suppliers.
• Quality assurance information.
Contents part 2
6) Test results
• Acceleration test Mini Cooper S
• Acceleration test VW Passat 1.8T
• Test of 3 Race cars
• Statistics drive wheel performance, 404 cars
• Steady state power BMW M5 -02
[Download Part 1]
(888 kb)
[Download Part 2]
(954 kb)
[Download] (214 kb)
The information below is republished with permission from Rototest Research Institute, RRI.
Performance measurements on chassis dynamometers ("rolling roads")
Contents part 1:1) The history of horsepower
2) Physics
• Power and torque
• Calibration.
3) Accuracy – Repeatability
• Measurement chains
• Cylinder pressure
4) Test Conditions
5) Test & Measurements
• Steady state
• Acceleration with inertia load.
• Acceleration with road load
• Acceleration at constant rate.
• Minimum demands for professional performance measurement suppliers.
• Quality assurance information.
Contents part 2
6) Test results
• Acceleration test Mini Cooper S
• Acceleration test VW Passat 1.8T
• Test of 3 Race cars
• Statistics drive wheel performance, 404 cars
• Steady state power BMW M5 -02
[Download Part 1]
(888 kb)
[Download Part 2]
(954 kb)
Why powertrain performance measurements
To address why Powertrain Performance should be measured, Rototest Research Institute has published a White Paper where Powertrain Performance measurements versus engine performance is discussed. The paper also includes statistical data where stated engine performance is compared to powertrain performance.
[Download] (214 kb)