Analysis and Verification of Bench-Test Back Pressure Sensitivity for Hybird System
Aiming at the consistency of the back pressure of the hybrid bench,the sensitivity of the factors af-fecting the back pressure of the system was studied.The influence factors are analyzed and verified by cross test.The test data prove that the back pressure rise≥10kPa and the back pressure reduction value≥6kPa of one cy-cle of engine external characteristic test on the bench,the impact of powertrain durability bench on the back pressure is up to nearly 10kPa,the difference of engine selection scheme on the back pressure is about(5～10)kPa,and the impact of calibration data is up to 4kPa.Bench back pressure is highly sensitive to the above fac-tors.The verification results show that it is very important to establish a unified test boundary condition for high sensitivity factors of back pressure.
Back pressureSensitivityBench-TestVerificationMultivariable
NETL
NSTL
万方数据
