Turbocharged engine with cooling exhaust recirculation technology

Abstract

The invention relates to a turbocharged engine with a cooling exhaust recirculation technology. An air inlet in the vortex end of a turbocharger is connected with an exhaust manifold, an air outlet is connected with atmosphere through an exhaust pipe, an air inlet of the compression end of the turbocharger is connected with an air filter through a first air inlet pipe, and the air outlet is connected with a throttle body communicated with an air inlet manifold through a second air inlet pipe. A three-way catalytic converter is arranged in the middle of the exhaust pipe, an engine intercooler is arranged in the middle of the second air inlet pipe, the exhaust port end of the exhaust pipe is further connected with the first air inlet pipe through a bypass pipeline composed of an EGR intercooler and an EGR valve, an air inlet of the EGR intercooler is connected to the exhaust port end of the exhaust pipe, the air outlet is connected with an air inlet of the EGR valve, and an air outlet of the EGR valve is connected to the first air inlet pipe. Due to the fact that the exhaust pipe is communicated with the first air inlet pipe through the bypass pipeline, a certain amount of exhaust is added into inlet air, anti-explosion and anti-vibration properties are improved, the compression ratio is improved, oil consumption and NOx emission are reduced, and the structure is simple and compact.

Description

technical field [0001] The invention relates to an automobile turbocharged engine, in particular to a turbocharged engine with cooling exhaust recirculation technology. Background technique [0002] Currently, supercharged engine technology has occupied an important position in the market and will gradually evolve into a dominant position. With the increasingly stringent national energy conservation and emission reduction regulations, the performance of supercharged engines still needs to be developed in depth to meet the future market with better fuel economy and emissions. Increasing the cylinder compression ratio is a simple and effective measure to improve engine combustion efficiency and reduce fuel consumption. However, due to the limitation of engine combustion knock, the compression ratio cannot be increased indefinitely, which greatly limits the development of supercharged engine technology. Contents of the invention [0003] The object of the present invention i...

AI Technical Summary

Problems solved by technology

Increasing the cylinder compression ratio is a simple and effective measure to improve engine combustion efficiency and reduce fuel consumption. However, due to the limitation of engine combustion knock, the compression ratio cannot be increased indefinitely, which greatly limits the development of supercharged engine technology.

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