Internal combustion engine system with asymmetrical dual-channel and dual-bypass valve turbine

Abstract

The invention discloses an internal combustion engine system and belongs to the technical field of internal combustion engines. The internal combustion engine system comprises an internal combustion engine (1), an asymmetrical dual-channel turbine (2), a shaft system (3) used for transferring power, a gas compressor (4), a first heat exchanger (5), an EGR valve (6), a second heat exchanger (7), afirst bypass valve (8) and a second bypass valve (9), wherein the internal combustion engine (1) is provided with one gas inlet and two exhausting ports; the asymmetrical dual-channel turbine (2) is provided with two volute channels different in throat port area; an inlet of the gas compressor (4) communicates with the atmosphere; and an inlet of the first heat exchanger (5) is communicates with an outlet of the gas compressor (4), and an outlet of the first heat exchanger (5) communicates with the gas inlet of the internal combustion engine (1). The asymmetrical dual-channel turbine chargingsystem with the dual bypass valves is adopted, it is facilitated that the oil consumption of the internal combustion engine is lowered while the EGR efficiency is improved, and energy saving and emission reducing of the internal combustion engine can be achieved better.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to an internal combustion engine system. Background technique [0002] Internal combustion engines play a very important role in national production and life, and most of the power for vehicles and ships are internal combustion engines. As the fuel consumption and emission regulations of internal combustion engines become more and more stringent, the design and manufacture of internal combustion engines are facing more and more challenges, and there is a greater demand for technologies that can take into account the emission and fuel consumption of internal combustion engines. The internal combustion engine consumes a large amount of fossil fuels, but on average only 30%-40% of the energy is converted into mechanical energy, and nearly 60%-70% of the energy is dissipated into the atmosphere in the form of heat transfer during the working process of the internal c...

AI Technical Summary

Problems solved by technology

However, in this solution, when the EGR valve 6 is partially opened, the exhaust back pressure in the small volute channel 21 will increase, thereby increasing the fuel consumption of the internal combustion engine 1, which is not conducive to better energy saving and emission reduction.

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