Have you ever wondered just how your car is powered ?? PartsAvatar outlines the importance of Combustion chamber and how it effects engine performance!

Read about Engine Combustion chambers in detail and Factors affecting the performance of chambers here- Partsavatar.ca Vehicle Parts!

Have you ever thought just how the fuel is burnt inside the car? Many of us will make a rough guess that it’s the job of an engine. It is. But who is performing this job inside the engine exactly?

We need fuel to run our cars. To burn that fuel and to produce energy some space is required. That’s where the concept of combustion chamber dives in.

Combustion chamber is an enclosed part of internal combustion engine in which air- fuel mixture is burnt. In short, combustion chamber is that area where air fuel mixture is ignited.

 It is generally formed on the one side by the shape cast into the cylinder head and on the other side by the top of the car engine's piston . When the piston is at the top dead center and the chamber is at its smallest dimension then this is the most vulnerable and unstable condition for air fuel mixture and then it is ready for ignition process. The combustion process increases the internal energy of the gas, thus increasing the temperature and volume of that gas. In the confined place, the volume is controlled and the pressure is produced. This pressure helps in moving piston on a crankshaft through automotive engine’s crankshaft pulley.

Combustion chambers work as the lungs for the engine. The better the combustion chamber design is the better the engine breathes. Combustion chamber design plays a pivotal role in the performance of Car’s Engine.  Car’s engine performance depends upon Shape of the top of the piston, shape of the chamber, location of valves and spark plugs and overall airflow through exhaust and intakes.

Now let’s have a look at widely used combustion chambers in modern cars.

Internal Combustion Engines

Internal combustion engine is a heat engine in which the combustion of air-fuel mixture takes place in an enclosed space which then produces energy and pressure to move piston, rotors and turbine blades. They basically use air as the oxidizing agent.

Different types of combustion chambers are found in the internal combustion engines. 

Cars and Motorized boats work on the Piston engine mechanism. In the combustion chamber, the energy created by burning air fuel mixture helps in sliding the piston tightly within the cylinder. In these engines, the location of combustion chambers may vary. The chamber may be located in the cylinder head or on the top of piston. For example a V6 engine with cylinders and pistons is commonly used in front wheel drive cars.

As compared to cars the jets and other gas turbines use combustors where the air is pulled in and compressed through the compressor.

Factors affecting the working of Combustion chambers

We can readily detect the problems with spark plugs and engine misfire of car if we know what exactly is happening inside the combustion chamber.

Internal combustion engine is advancing day by day towards the route of perfection. The revolution in the engine world was made by moving fuel injector port into the cylinder and making combustion process more precise. Automakers are aspired to make the engines with compression ratio 12:1 with low emission elements like pump gas and cast pistons.

Spark Plugs

Spark plug is a vital component of car’s ignition system. It delivers the electric current produced by car’s ignition system parts to the combustion chamber to ignite air fuel mixture by electric spark. It also acts as a heat exchanger as it pulls unwanted thermal energy from the combustion chamber and transfers heat to engine’s cooling system.

They play a vital role in igniting the fuel. In modern cars, the area where the spark is created is much smaller while the plug gaps are same as that of old engines. But today’s spark plugs have increased its complexity.

Ford 5.4 Triton V8 users often complain about the spark plugs as they are long and narrow and at the same time very difficult to remove. They are placed near the exhaust and intake valves. So, if the spark plugs wear out by time, ford users need to pay for extra labor cost to remove the complex parts before getting to the spark plugs. In the spark induced internal combustion engines, just forget to drive if the spark plugs are not working.

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EGR Systems

Exhaust gas recirculation or EGR of car is an effective mechanism to control NOx emissions from diesel engines. The EGR reduces the level of NOx gases by lowering the oxygen concentration in the combustion chambers and by heat absorption. EGRs are popular in Gasoline engines to increase the engine efficiency and reduce the pumping work.

EGR systems put a small amount of inert gas into the combustion chamber to control the temperatures. They reduce the NOx emission by lowering the combustion temperature as the exhaust gases do not get burnt.

The temperature in the combustion chamber due to various reactions and mixing may rise up to 2500°F. In high temperature, the oxygen and nitrogen start combining to form harmful gases like NOx and CO.

Advanced vehicles with variable valve timing on both exhaust and intake cam shafts can adjust the timing so that small amount of exhaust gas is sucked into the chamber during intake stroke.

A properly working EGR system is very important to prevent the formation of harmful oxides in the chamber due to increased temperature. It affects both exhaust system parts as well as the performance of the engine.

Buy Car’s EGR system components and Auto Exhaust system parts at lucrative prices from Partsavatar.ca replacement auto parts.

Catalytic Converter

Catalytic converter is one of the most expensive parts of the car and heavily prone to theft due to its design. It contains catalyst that fastens the conversion of unburned hydrocarbons, nitric oxides and carbon monoxides into less harmful gases like carbon dioxide, nitrogen and steam/water. The reactions inside the combustion chambers directly affect the working of a catalytic converter.

Anything that gets through the combustion chamber and reaches the face of the converter can reduce its efficiency.

If the emission system sensors fail to detect the formation of gases and substances inside the chamber, you are just inviting a huge replacement bill.

Install sensors and keep record of the emissions of the car exhaust tailpipe. Make sure there is no leak in the engine that is causing the leakage of coolant or other liquid into the chamber as the liquid will automatically flow from chamber to the converter and hence the ultimate destruction of the catalytic converter will take place. Mind you, replacement of a normal Catalytic converter may start from $2000.

For good engine performance and combustion chambers, better keep the catalytic converter in good condition. Buy top quality cars' direct fit catalyticconverter parts at cheap prices from parts avatar Canada.

Bottom-line

To achieve a robust combustion event out of a combustion chamber, pay attention to the upper mentioned factors. Exhaust gases especially the harmful ones are not good for engine’s health. With the technologies, ensure the correct amount of air-fuel mixture is being burnt in the chamber and optimal engine performance is being achieved.

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Now you can replace Catalytic converter and direct fit converters at affordable prices at partsavatar

Is car’s exhaust system emitting harmful gases? Parts avatar brings a good range of Catalytic converters and exhaust system auto parts at cheap prices across Canada.

All cars have exhaust system to transfer combustible gases away from the engine. Exhaust system of car not only reduces the emission of gases to the atmosphere but also helps the engine to run more efficiently. With the increase in number of cars on the road, air pollution level has also increased rapidly. Fortunately, nowadays cars come with a device called “catalytic converter” that helps in reducing air pollution and harmful gases emitted by car’s engine.  A catalytic converter is an emission control device that decreases the toxicity of gases and diesel engines by basically catalyzing a redox reaction.

For deeply understanding catalytic converters let us understand the term catalyst. Catalyst is a compound that can start a chemical reaction without affecting itself. It just makes a chemical reaction run faster. It speeds up the process of removing the pollution.

A controlled combustion reaction needs to occur inside car engine for operating the internal combustion in car's engine. But it also produces harmful gases in the air. So as to decrease the harmful gases in the air modern automobiles are equipped with catalytic converters. Today, catalytic converters are mandatorily used in trucks, cars, motor bikes, mining equipments and even stoves.

A catalytic converter reduces the following compounds found in car exhaust:

1. Carbon monoxide

2.  Nitrogen oxide

3. Hydrocarbons

Catalytic converter is a metal box underside your car and has two pipes coming out of it. The task of catalytic converter is to convert these harmful compounds into less harmful compounds before leaving the exhaust. One of its two pipes is input pipe and its function is to bring in hot and polluted fumes from engine’s cylinders. Second pipe is called output pipe which is connected to the tailpipe of car's exhaust or exhaust. A chemical reaction triggers whenever the gases from engine fumes blow over the catalyst, separating pollutant gases and converting them into less harmful gases.

A combination of platinum, palladium and rhodium is used as catalyst in catalytic converter. The metals coat the ceramic beads within metal casing of exhaust pipe. The catalytic ceramic beads provide maximum surface area for the reaction to take place by using less amount of catalyst.

REACTIONS INSIDE CATALYTIC CONVERTER

Reduction and oxidation reactions take place inside the converter. Gases flow through honeycomb like structure that is coated with catalysts and made of ceramic. Honeycomb structure gives them enough space for reaction.

First with the help of reduction catalyst such as platinum and rhodium, catalytic converter reduces nitrogen oxide into nitrogen and oxygen gases.

In the second stage of oxidation reaction, catalyst as platinum and palladium turn carbon monoxide into carbon dioxide.  Another oxidation turns unburned hydrocarbons into water and carbon dioxide.

As we can see, there are three reactions going on in total. Therefore, these are called three way catalytic converters.

In the end, the exhaust produces gases such as nitrogen, oxygen, carbon dioxide and water (steam form).

In gasoline engines, about 90 % of hydrocarbons, carbon monoxide and nitrogen oxides are converted into less harmful compounds. So these are much efficient in gasoline run engines.

As catalytic converters work at high temperatures, its efficiency is very less in diesel run engines.

CHOOSING A GOOD CATALYTIC CONVERTER

1. The best way to search a good catalytic converter is to find the converters that fit with your vehicle’s year, model and design.

2. In the engine compartment, you can see a vehicle emission control information tag. This emission certification helps you to choose a better converter for your vehicle.

3.  You can opt for direct fit or universal fir design. Direct fit will give you a hassle free fitment while universal will require cutting, welding or fabrication. As compared to direct fit, universal fit is a cheaper option to opt for. Keeping in mind your requirements and specification you can easily make your choice.

DAMAGE AND PRECAUTIONS         

 Excessive oil or carbon could clog a catalytic converter. When this happens, the engine will not accelerate and may stall after a few minutes. An engine with a clogged converter may send error code from car Oxygen sensors to computer. A clogged converter should be replaced by professional.

Due to additive run in the engine, they can also become poisonous. This causes the converter to work less efficiently.

Catalytic converter deteriorates when leaded gasoline or rich fuel mixture is used.  A rich fuel mixture produces high temperature that causes the parts in converter to melt.

The lead in leaded gasoline adheres to and coats the catalyst, which then can’t do its conversion job on polluting gases. A thick coat of lead builds on catalyst. The end result of this is that the exhaust gases are kept from coming into contact with the catalyst.

Other harmful substances that can damage a catalyst converter are sulfur, manganese and silicon. They can enter the exhaust stream through the leak in the engine.

Depending on the contaminant, sometimes a poison can be reduced by running the engine for a long time under heavy load. The increased temperature may vaporize the contaminant from its surface. But it is very difficult to remove lead deposits because lead has high boiling point. So it is advised to always use unleaded gasoline in your vehicle.

The OBD diagnostic systems are designed to alert a driver to a misfire condition as misfire conditions could severely damage catalytic converters.

Because catalytic converters are made up of expensive metals like platinum, rhodium, palladium and even gold, they are target for thieves. Bolt on converters can easily be cut or removed of the late model vehicles or SUVs. It can cost more than $1000 to replace.

DIRECT FIT CONVERTER VS UNIVERSAL CATALYTIC CONVERTER

Direct fit and universal catalytic converters are aftermarket options available. car's Direct fit catalyticconverter exactly matches the design or model of your car. If you are considering a high performance engine then go for direct fit converter. Direct fit converter components are specially designed using specific length and pipe width to take advantage of vacuum that hot gases produce when they leave the exhaust manifold. Not only they increase engine performance but also they reduce noise. But they are costlier as compared to universal converters.

Universal converters are designed to fit for various trucks, cars or vans. They can hinder the effectiveness of a direct fit converter thus decreasing engine’s performance. They are generally cheaper than the direct fit converters. But its installing is quite complicated as compared to direct fit.

While making choice, vehicle’s design should be kept into consideration along with other factors that could affect the installation of converter. You could take a professional’s advice or follow standards specific to your vehicle’s state.

Direct fit converters are also available under affordable prices at partsavatar.ca. So if you are looking for aftermarket purchase of exhaust system auto parts and catalytic converter components then do visit partsavatar.ca.