Wednesday, 8 April 2015

How Exhaust System Works?

Exhaust System

Working Of Vehicles Exhaust System

Helpful Information
Engines produce water and steam with the exhaust gases as a natural byproduct of the combustion process, which can be observed from the tailpipe in the first minutes of operation. As the engine heats up the water is vaporized quickly so the moisture is not visible. Most exhaust systems are made of aluminized metal or stainless steel to prevent corrosion. A secondary muffler is sometimes used and referred to as a resonator, which increases the muffle affect.
Fumes from exhaust gases are quite harmful and can cause complications including lightheadedness, blurred vision and death. After the engine has cooled down, inspect the system for cracks, holes or rust. When a new exhaust system is used for the first few times, its normal for unusual odors to be produced for a short time after.
Performance Exhaust
There are endless configurations of exhaust systems from the very loud (free flow, low restriction), to the barely audible depending on application and manufacturer preference. Performance exhaust systems can vary from a free flow muffler, to a full system including headers which replace the more restrictive exhaust manifolds. While standard exhausts are designed to be cost efficient, a performance system is usually made from higher grade of materials with more performance oriented ambitions. Consult state and federal emissions laws before modifying a vehicles exhaust system.
Common Problems
  • Defects or corrosion in the exhaust system cause exhaust gases to be inhaled by passengers causing asphyxiation.
  • When driving long distances the exhaust system can become hot, which can cause ignition of dried timbers or grass under vehicle.

Step by step guide on how an automotive exhaust system works. This article pertains to all gasoline powered vehicles.
Step 1 - Once exhaust gases are generated from an internal combustion engine, the exhaust system is responsible for routing these gases from the engine. The process begins as the exhaust valve opens and releases hot gases into a exhaust manifold which is connected to the cylinder head. An exhaust manifold is bolted to the cylinder head, and is used to gather exhaust gases from the cylinder ports and collected into one location.

Exhaust Manifold
Step 2 - After collecting exhaust gases, the manifold disperses them at the manifold flange connection.

Exhaust Manifold Flange

Step 3
 - Then, these gases are collected at the flange as they enter the head pipe which bolts to the manifold flange.

Exhaust System Head Pipe
Step 4 - Exhaust gases then travel to the catalytic converter, which houses theoxygen sensor. There is a primary sensor located on the head pipe, this device is shielded from the body using a heat shield.

Catalytic Converter w/Oxygen Sensor
Step 5 - Once the gases are treated by the catalytic converter and read by the oxygen sensor they are released into the primary transfer pipes.

Primary Transfer Pipes

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