Exhaust manifold device and front end cover processing method

A technology of exhaust manifold and front end cover, which is applied in the direction of exhaust device, muffler device, metal processing equipment, etc. It can solve the problems of cylinder exhaust turbulence, reduce exhaust resistance, improve utilization rate and service life, The effect of improving power

Active Publication Date: 2015-10-14
BRILLIANCE AUTO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention proposes an exhaust manifold device and a processing method for the front end cover, which solves the problems of cylinder

Method used

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  • Exhaust manifold device and front end cover processing method
  • Exhaust manifold device and front end cover processing method
  • Exhaust manifold device and front end cover processing method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0020] Example 1:

[0021] The exhaust manifold device used in this embodiment includes an inlet flange 1, an outlet flange 14, and an elbow exhaust duct connected to the cylinder fixed between the two, including a first elbow air duct 2, a second The elbow air passage 3, the third elbow air passage 4 and the fourth elbow air passage 5 are composed of the first catalytic converter front end cover 8, the first catalytic converter body 10 and the first catalytic converter back end cover connected together in sequence The first catalytic converter assembly is composed of 12, and the second catalytic converter assembly is composed of the second catalytic converter front end cover 9, the second catalytic converter body 11 and the second catalytic converter rear cover 13 which are connected together in sequence. Among them, the elbow exhaust passages are connected together in two groups according to the firing sequence of the cylinders at intervals. For example, the first elbow air pas...

Example Embodiment

[0024] Example 2:

[0025] A method for processing the front end cover of an exhaust manifold includes the following steps:

[0026] Step 1: Use Pro / Engineer software or CATIA v5 to establish a three-dimensional model of the front cover, including the first air inlet, the second air inlet, the first drainage part where the first air inlet and the second air inlet connect, and A second arc-shaped drainage portion connected to the first air inlet, a third arc-shaped drainage portion connected with the third drainage portion, and a front end cover body connected with the second arc-shaped drainage portion and the third arc-shaped drainage portion. In this embodiment, the initial arc radius of the second arc-shaped drainage portion CD and the third arc-shaped drainage portion AB is set to be the same as the radius of the catalyst body, both of which are 50 mm. Users can set according to their needs.

[0027] Step 2: Use fluid mechanics to calculate the fluid distribution on the front f...

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Abstract

The invention relates to the technical field of exhaust devices of internal combustion engines, in particular to an exhaust manifold device and a front end cover processing method. Every two bend exhaust channels are connected together as a set in a spaced air cylinder ignition sequence. Through the structure of adopting every two bend air channels as a set in an ignition spacing mode, the poor phenomena of airflow snatching, backflow and the like are avoided; exhaust resistance is effectively reduced; the dynamic property is improved. Gas data recognized by two oxygen sensors are more accurate, reasonable parameters are provided for fuel oil injection, and more oil is saved. Due to the fact that the bend air channels form a Y-shaped structure, and catalyst front end covers comprise first air inlets, second air inlets, first drainage parts, second arc-shaped drainage parts and third arc-shaped drainage parts, airflow is made to be evenly mixed through the unique arc-shaped structure; the utilization rate of catalytic agents is effectively improved, and the service life of the catalytic agents is effectively prolonged. Finally, two catalysts connected in parallel are used for improving conversion capacity and catalytic efficiency, and the exhaust level is improved.

Description

technical field [0001] The invention relates to the technical field of exhaust devices of internal combustion engines, in particular to an exhaust manifold device and a processing method for a front end cover. Background technique [0002] With the increasingly stringent requirements of automobile emission standards and people's higher pursuit of vehicle power and economy, for the exhaust manifold and catalytic converter of an in-line 4-cylinder four-stroke engine, the existing technology usually uses the The structure in which the four exhaust passages converge into the same catalytic converter can easily cause exhaust turbulence and swirl in each cylinder, which increases exhaust resistance and reduces power performance. At the same time, since the four airways each use a single oxygen sensor, the information identified by the oxygen sensor is not accurate enough, resulting in high fuel consumption. In addition, traditional technologies often increase the emission level b...

Claims

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Application Information

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IPC IPC(8): F01N13/10F01N3/28B21D37/20G06F17/50
Inventor 贺永刚黄昌瑞李振华李志广
Owner BRILLIANCE AUTO
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