CN201062536Y

CN201062536Y - 2.8 liters diesel engine exhaust manifold having thermally-insulated shroud

Info

Publication number: CN201062536Y
Application number: CNU2007200390614U
Authority: CN
Inventors: 胡必谦; 高伟; 钱多德; 欧阳彩云
Original assignee: Anhui Jianghuai Automobile Group Corp
Current assignee: Anhui Jianghuai Automobile Group Corp
Priority date: 2007-07-03
Filing date: 2007-07-03
Publication date: 2008-05-21
Anticipated expiration: 2017-07-03

Abstract

The utility model relates to a diesel engine, in particular to a 2.8 liters diesel engine exhaust manifold with a thermal protection shield. The utility model resolves the problem in the prior art that the normal working and the service life of the exhaust manifold are affected because of high temperature.. The utility model is structurally characterized in that a thermal protection shield is arranged on one side of the exhaust manifold adjacent to the air compressor of a pressurizing device; the across section of the thermal protection shield adopts a step shaped inverted U shaped structure. The design of thermal protection shield of the exhaust manifold of the utility model is reasonable, therefore, not only the normal working of the parts around the exhaust manifold is ensured, but also the failure rate of the motor is greatly reduced. Not only the structure of the thermal protection shield of the exhaust manifold is simple, the vibration is small, but also the material of the thermal protection shield adopts the combining form that the middle layer adopts ceramic fiber paper and the inner and outer layer adopt a zinc plated layer and an aluminum plated layer, and the thermal insulation effect is obvious.

Description

2.8 liters of diesel exhaust gas manifolds with thermal shield

Technical field

The utility model relates to diesel engine, relates in particular to the gas exhaust manifold of diesel engine.

Background technique

During engine operation, the high-temp waste gas of discharge makes exhaust manifold temperature raise, and the gas exhaust manifold typical temperature is about 300-500 ℃, and the proper functioning and the working life of part make that on the other hand the breakdown in the motor rate is higher around having influenced to a great extent.

Summary of the invention

The utility model for the proper functioning that solves part around the gas exhaust manifold temperatures involved that exists in the prior art and working life problem, a kind of 2.8 liters of diesel exhaust gas manifolds with thermal shield are provided.

The architecture advances scheme is as follows particularly:

Have 2.8 liters of diesel exhaust gas manifolds of thermal shield, comprise exhaust elbow and gas exhaust manifold.

Be covered with thermal shield in adjacent with the gas compressor of pressurized machine, gas exhaust manifold one side;

The cross section of described thermal shield is stepped reverse U shape.

The cross section of described thermal shield material comprises mesosphere and interior surface layers, outer surface layer, and intermediate layer material is a ceramic fiber paper, and interior surface layers and outer surface layer all are the aluminum-zinc alloy steel plate.

The utility model reasonably designs exhaust manifold thermal shield, not only guarantees the gas exhaust manifold proper functioning of part on every side, and makes the breakdown in the motor rate reduce greatly.This exhaust manifold thermal shield is not only simple in structure, vibrate little, and thermal shield material to adopt the mesosphere be that ceramic fiber paper, interior surface layers and outer surface layer are the combining form of aluminum-zinc alloy steel plate all, effect of heat insulation is obvious.

Description of drawings

Fig. 1 is the utility model structural representation,

Fig. 2 is the thermal shield structural representation,

Fig. 3 is the left view of Fig. 2,

Fig. 4 is the thermal shield material cross-sectional view.

Embodiment

Below in conjunction with accompanying drawing, the utility model is further described by embodiment.

Embodiment:

2.8 liters of diesel exhaust gas manifolds with thermal shield comprise exhaust elbow 2 and gas exhaust manifold 3, at adjacent with the gas compressor of pressurized machine, gas exhaust manifold 3 left sides cover thermal shield 1 are housed, and see Fig. 1.

Referring to Fig. 2, Fig. 3, the cross section of thermal shield 1 is stepped reverse U shape, and the top has bolt hole 7, and thermal shield 1 is installed in gas exhaust manifold 3 left sides by bolt.

The cross section of thermal shield material comprises mesosphere 5 and interior surface layers 6, outer surface layer 4, and mesosphere 5 materials are ceramic fiber paper, and interior surface layers 6 and outer surface layer 4 are the aluminum-zinc alloy steel plate all, see Fig. 4, have reached good effect of heat insulation.

After thermal shield 1 was installed, gas exhaust manifold 3 was with parts are directly not relative on every side, and the structure of thermal shield has played good heat-blocking action.

Claims

1. have 2.8 liters of diesel exhaust gas manifolds of thermal shield, comprise exhaust elbow and gas exhaust manifold, it is characterized in that:

Be covered with thermal shield in adjacent with the gas compressor of pressurized machine, gas exhaust manifold one side; The cross section of described thermal shield is stepped reverse U shape.

2. 2.8 liters of diesel exhaust gas manifolds with thermal shield according to claim 1, it is characterized in that: the cross section of described thermal shield material comprises mesosphere and interior surface layers, outer surface layer, intermediate layer material is a ceramic fiber paper, and interior surface layers and outer surface layer all are the aluminum-zinc alloy steel plate.