Modern Marine Internal Combustion Engines by Ievgen Bilousov & Mykola Bulgakov & Volodymyr Savchuk

Author:Ievgen Bilousov & Mykola Bulgakov & Volodymyr Savchuk
Language: eng
Format: epub
ISBN: 9783030497491
Publisher: Springer International Publishing

2.1.1 The V35/44G Engine

The V35/44G engine from MAN Diesel & Turbo (Fig. 2.1) is a new class of high-powered gas reciprocating engines with single-stage turbocharging, operating on the Miller cycle. The V35/44G engine was created on the basis of a V32/44CR diesel engine, and is available in a V-shaped 12 and 20-cylinder design. The output power of the engine reaches 10,600 kW, and the effective efficiency reaches 48.4%. The engine has implemented many innovative technological solutions, in addition, it meets the standard for the level of emissions of harmful substances TA-Luft. Engines have a highly efficient electric spark ignition system. A spark plug is installed in an antechamber where gas enters through a separate metering valve. Mixing with the lean mixture, which comes from the main combustion chamber during the compression stroke, the gas that enters into an antechamber forms a gas-air mixture similar in composition to the stoichiometric one, which is ignited by an electric spark. The streams of burning gas from the antechamber effectively ignite the lean mixture in the main chamber, contributing to its complete burnout. TCR type turbochargers are equipped with a VTA (Variable Turbine Area) unit with adjustable turbine nozzle geometry, which allows optimizing the performance of the turbocharger depending on the engine’s operating mode, to maintain a given air-fuel ratio. For cooling the charge air, one air cooler is used for each row of cylinders. To extend the range of operating temperatures of the air at the engine inlet, bypassing of the compressor was used.

Main technical parameters of engines series V35/44GParameter

Value

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