Thermal shroud assembly of supercharged engine

Abstract

The invention discloses a thermal shroud assembly of a supercharged engine. The thermal shroud assembly comprises an upper exhaust manifold shroud, a lower exhaust manifold shroud and a lower supercharge shroud, wherein the upper exhaust manifold shroud consists of a flat plate, a transition arc-surface plate and a rear side plate; an arc convex rib is arranged on the front edge of the flat plate; a vent hole is formed in the middle of the flat plate; an avoiding bulge is arranged on the right side of the transition arc-surface plate; a hoop avoiding notch is formed in the left part of the rear side plate; a return water tube avoiding notch is formed in the right part of the rear side plate; an abdication groove is formed in the front side of the lower exhaust manifold shroud; an abdication arc surface is arranged on the left part of the rear side of the lower exhaust manifold shroud; an avoiding arc surface is arranged at the right part of the rear side of the lower exhaust manifold shroud; the lower supercharger shroud comprises a first bracket, a second bracket and a lower shroud body; an abdication notch is formed in the right side of the lower shroud body; a connecting arm is arranged at the right end of the upper side of the lower shroud body; a triangular connecting plate is arranged at the right end of the lower side of e lower shroud body; an arc avoiding groove is formed in the lower side of the lower shroud body. By adopting the thermal shroud assembly, thermal conduction can be effectively cut off under the condition that a sufficient part assembling space is ensured, and meanwhile the thermal shroud assembly has good NVH (Noise Vibration and Harshness) performance.

Description

technical field [0001] The invention belongs to the field of automobile engine parts, and in particular relates to a supercharged engine heat shield assembly. Background technique [0002] When the engine is running normally, the high-temperature exhaust gas formed after its combustion and work is discharged through the exhaust manifold. These high-temperature exhaust gases carry a lot of heat, so the temperature of the exhaust manifold is relatively high, and it will radiate heat to the surrounding components. With the wide application of supercharging technology, supercharging engines generally have stronger power and more fuel-efficient than naturally aspirated engines, but the heat emitted by the exhaust system will further increase after supercharging technology is adopted. In order to ensure the normal operation and safety of the engine, it is necessary to use a heat shield to isolate the exhaust system for heat insulation. [0003] Due to the adoption of pressurizati...

AI Technical Summary

Problems solved by technology

At the same time, this heat shield assembly also ignores the guidance of airflow and the avoidance of the assembly space of surrounding parts, resulting in poor heat insulation effect and difficult assembly

Images