TURBOCHARGING OF INTERNAL COMBUSTION ENGINES IN PARTIAL MODES OF OPERATION
The increase of turbocharging efficiency at starting and non-optimal modes is ensured by the regulation of the engine’s gas passage cross-sectional area. The regulation is performed by the guides (installed directly in front of the turbine) which reduce the cross section of the gas passage. The area of the gas passage is determined depending on the flow of exhaust gases. In this case, the velocity of the gases directly in front of the turbine is kept constant in all modes of diesel engine operation. With the engine’s nominal capacity the cross-section of gas passage corresponds to the engine’s exhaust.