Why will a turbocharger diesel engine produce black smoke if excessive additional load is
A. Exhaust energy would draw excess air
B. The inertia of the turbocharger rotor causes a time lag which delays the turbocharger speed increase
C. Exhaust gas pumping losses are increased due to turbine windage
D. Exhaust gas back pressure falls slightly due to increased nozzle action
微信支付 
支付宝支付