Exhaust gas heat exchange system for automobile engine

Abstract

An exhaust gas heat exchange system of an automobile engine is used for realizing reutilization of exhaust gas energy of the engine and achieving the purposes of energy conservation, emission reduction and improvement on vehicle comfort. The system comprises an automobile warm air blower circulation pipeline, an engine gas exhaust pipeline and an engine gas inlet pipeline, wherein the automobile warm air blower circulation pipeline is filled with a circulation water medium and connected with a water inlet and a water outlet of an automobile warm air blower. The system is characterized in that a first heat exchange water sleeve which is in parallel connection with the engine gas exhaust pipeline and a second heat exchange water sleeve which is in parallel connection with the engine gas inlet pipeline are arranged on the automobile warm air blower circulation pipeline. According to the system, exhaust energy of the engine is fully used, so that the heat efficiency of the engine is improved, the economy and the emission performance of the engine are improved, and the requirement for the vehicle driving comfort is met.

Description

technical field [0001] The invention relates to a heat exchange system, in particular to an automobile engine exhaust gas heat exchange system, which belongs to the technical field of internal combustion engines. Background technique [0002] The automobile industry in the 21st century is developing in the direction of intelligence, economy, and environmental protection. Especially in the field of engines, the research on intelligent start-stop, lightweight, fuel injection strategy, and thermal efficiency improvement has attracted more and more attention. At the same time, people also put forward higher requirements for the driving comfort of vehicles. [0003] At present, automobile engines have the following defects: first, most of the heat energy generated by fuel combustion is taken away with the exhaust of the engine, and the thermal efficiency of the engine is low; The gas temperature and fuel combustion temperature are low, and the fuel cannot be fully burned, which ...

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Problems solved by technology

[0003] At present, automobile engines have the following defects: first, most of the heat energy generated by fuel combustion is taken away with the exhaust of the engine, and the thermal efficiency of the engine is low; The gas temperature and fuel combustion temperature are low, and the fuel cannot be fully burned, which not only affects the economic performance of the vehicle, but also makes the HC emission not meet the standard requirements; third, due to the cold winter, in order to increase the temperature in the cab, it is necessary to use the engine water The heat exchange between the cooling system and the engine block provides heat for the heater, which increases the fuel consumption of the vehicle and deteriorates the economy. At the same time, there is also the problem of poor quick response of the heater in the cab.

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