The engine control system (1) is for a turbocharged internal combustion engine (55). The control circuit (40) is connected to a mass flow sensor (60) and various further sensors (65-75) in the exhaust pipe (20). It measures the flow of gas into the turbine...

A method for controlling an exhaust-gas turbocharger with variable turbine geometry in an internal combustion engine is presented. The turbocharger comprises a turbine in communication with an exhaust-gas manifold of the engine; a compressor connected to t...

The diesel engine (10) is provided with a variable displacement turbo-charger (30) for adjusting the supercharging air pressure in an intake passage (22). The turbo-charger (30) includes a turbine (32) having variable vanes (36). The variable vanes (36) op...

In a diesel engine (1), a representative value of a difference of a target intake air amount and a real intake air amount is calculated when a first condition is satisfied (S266). Simultaneously, a parameter which affects the relationship between a flowrat...

A control unit (41) sets a target opening of a variable nozzle (53) of a turbocharger (50) according to a running condition of a diesel engine (1), and controls the opening of the variable nozzle (53) to the target opening. The control unit (41) calculates...