Passenger car rear body capable of effectively cooling engine cabin

Abstract

The invention discloses a passenger car rear body capable of effectively cooling an engine cabin. The passenger car rear body comprises the appearance shape of the rear body, an air-out grating and a convex streamline empennage. According to aerodynamic characteristics of a passenger car with a rear engine and a rear drive in running, a curve of a section of the engine cabin at the rear of the car is formed by combing a non-uniform rational B-spline with a lemniscate; and according to directions of airflow suction of a suction fan, the air-out grating is fan-shaped arc, a flow deflector is added at a transition position between the car roof and the car body, and the convex empennage is added behind the air-out grating. According to the passenger car rear body with the structure, throttling effect caused by air exhaust can be fully reduced, suction effect on air-out airflow can be realized, radiating performance of a radiator assembly of the car can be improved, airflow in the engine cabin can flow more smoothly, and possible overheating can be effectively lessened.

Description

technical field [0001] The invention relates to a vehicle technology, in particular to a rear body of a passenger car for effectively cooling an engine compartment. Background technique [0002] At present, large and medium-sized passenger cars generally adopt the installation method of the rear engine, and the large throttle effect of the rear grille of the passenger car makes the cooling system and the heat dissipation of the engine compartment poor. The enclosure and the floor form an irregular space, and the heat dissipation of the cabin and cooling system is carried out through the grille holes in the side and rear enclosures. The components in the engine compartment are arranged very compactly. At the same time, more high-temperature components (such as radiators, intercoolers, engine bodies, exhaust manifolds, and turbochargers, etc.) lead to deterioration of the heat dissipation conditions of the entire engine compartment, resulting in excessive engine temperature, ...

AI Technical Summary

Problems solved by technology

At the same time, more high-temperature components (such as radiators, intercoolers, engine bodies, exhaust manifolds, and turbochargers, etc.) lead to deterioration of the heat dissipation conditions of the entire engine compartment, resulting in excessive engine temperature, and the problem of boiling in summer. The passenger car cannot run normally, and in serious cases, it will cause operational failure

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