Month: November 2022

Oxygen Sensor

Oxygen sensors are typically positioned on either side of the catalytic converter. They measure how much oxygen is in the exhaust system, and in the waste gases. Ideally, there would be none.

 What Does An Oxygen Sensor Do?

An oxygen sensor helps to fine-tune the intake process and is often located in the exhaust manifold.

 Based on the oxygen levels, a sensor then either adds or reduces fuel in the combustion process. This allows the exhaust to have the right fuel to air mixture.

 The engine should use the exact amount of oxygen required to burn the fuel completely. This would mean that no oxygen or fuel would be leftover.

The Engine Control Unit (ECU) of a modern fuel-injected car, analyses the exhaust sensor oxygen reading. Then the ECU can help make sure that the best mix of air to fuel is in the engine cylinder. It does this by changing the amount of fuel being injected.

Catalytic Converter

Catalytic converters are found between the silencer and the manifold. Their role is converting pollutants found in exhaust flames into pollutants which are less harmful to both people and the environment.

If your vehicle originally had a catalytic converter fitted, then it is required by law to have one. If it is removed, your car will fail a roadworthy inspection. All modern cars have a catalytic converter.

What is a Catalytic Converter

Car manufacturers are now required by law since 1986 to fit all new passenger vehicles with a catalytic converter. But what exactly is a catalytic converter

It transforms exhaust gases which may be harmful into environmentally friendly elements. In simple terms, it gets rid of anything nasty from the exhaust gas.

The catalytic converter turns the pollutants from exhaust gases into nitrogen, water and carbon dioxide. Its purpose is to make sure that whatever comes out of the exhaust pipe won’t harm the environment.

This is a crucial part of the car exhaust system, and it helps to reduce pollution.

An exhaust manifold is critical

Its purpose is to get exhaust gases from the engine cylinders. Exhaust manifolds will correctly direct the gases throughout the rest of the exhaust system. It makes sure that that toxic gases from the exhaust do not go inside the vehicle and poison the driver and passengers.

What Is An Exhaust Manifold?

Exhaust manifolds are positioned on a vehicle’s engine, and for most vehicles, it is usually where the exhaust starts.  

It’s made of cast iron metal and used to connect the engine with the other parts of the exhaust system.

The manifold has individual tubes on one side. The tubes connect to each engine cylinder. They then merge into the exhaust manifold and come out the other side as a single tube.

Did you know that engines have intake manifolds too? But they go the other way. From the engine, there is a single starting point for fresh air. This is then split into each separate tube. Then the tubes will split off the manifold. They then take air to each cylinder individually for combustion.

How Car Exhaust Systems Work

Each time your car runs, inside the engine there are thousands of small explosions happening. Each explosion produces power. It does this when it pushes against the pistons of the engine.

A side effect of the explosions is that, besides producing power, they produce leftover gas too.

The gas contains chemicals which are potentially dangerous. They include carbon monoxide, carbon dioxide, nitrogen oxides and hydrocarbons.

To stop the gases from entering the cabin and causing people to inhale them, they have to be directed away from the engine compartment. This is the primary function of a car exhaust system.

But modern vehicles have been designed for exhaust systems to do more. If exhaust gases go directly into the atmosphere, it causes them to affect more people. Not to mention, the non-stop engine explosions also produce noise pollution.

The car exhaust systems of today, have been designed to take care of all these problems.

Functions of a Car Exhaust System

A car exhaust system has three essential functions. They include:

To direct all exhaust fumes from the engine to behind the vehicle
To reduce emissions by decreasing the number of toxic chemicals in the fumes
To reduce the noise caused by the explosions which occur during the fuel combustion process.

A car exhaust system consists of many chambers and pipes. It begins at the engine and goes all the way to the tailpipe at the back of the vehicle.

Most vehicles have four-cylinder engines with a single exhaust. High performance and ‘sporty’ cars like a V8 generally will have twin exhausts.

Car Exhaust System Parts

Most people assume a car exhaust system is only the length of the tailpipe. It’s an easy mistake to make, as this is the only part of the exhaust which is visible (the part right at the very end).

But actually, an exhaust system is made up of six different parts. The average length of an exhaust system is a large 3 meters.

Exhaust System Parts Names

The exhaust system parts names are as follows:

Exhaust Manifold

Oxygen Sensor

Catalytic Converter

Diesel Particulate Filter

Exhaust Pipe

Muffler

Each part has a very different purpose, and for an exhaust system to work correctly, all six parts must be functioning correctly.

How to remove the odor of silicone products?

Many people who have purchased silicone products have found that the silicone products they just purchased will have some odors, so are there any quality problems with these silicone products, and how are these odors generated. How to remove the odor on silicone products?

Anyone who knows about silicone products knows that good silicone raw materials are non-toxic and tasteless, but in the production process, they will go through processes such as adding color masterbatches, fluidizing agents, and high-temperature molding by hydraulic presses. A little odor is produced, which is a normal phenomenon, not a problem with the quality of silicone products. In fact, the solution to this problem is very simple, as long as it is placed in a ventilated place for 2-3 days, the smell will disappear.

But to really remove the unpleasant odor of silicone products, the best way is to optimize the selection of silicone raw materials and the vulcanization process.

　　1. Silica gel raw materials and production and processing: In order to reduce costs, some silicone product manufacturers often increase a certain share of recycled silica gel, and at the same time also increase a certain share of polluting operating oil; however, these must use environmentally friendly, tasteless and good for silica regeneration. Polluting volatiles have to inhibit and degrade the process oil to complete. Therefore, we need to deal with the odor of silica gel products on the basis of selection from the raw materials and production and processing of silica gel.

For example: choose oil with high flash point and odorless; do not add reclaimed rubber; do not use accelerator CBS; do not use DCP, etc.

2. Vulcanization system and process: Silica gel is a gas-phase glue, and is mixed with an odorless vulcanizing agent, and the silica gel is formed after secondary vulcanization.

Silicone tube is widely used

In recent years, silicone tubes have been widely used in modern industries, defense industries and daily necessities such as aviation, electronics, petroleum, chemical industry, machinery, electrical appliances, medical care, ovens, and food. Its basic purpose is the safe and efficient transfer of specific kinds of fluids, liquids or gases in a given physical, mechanical and chemical environment. Silicone tubing is more used in the transportation, automotive and shipbuilding industries, in the automotive industry. It is mainly a silicone tube used for water cooling and intercooling systems of automobile engines.

Although the silicone tube is an industrial silicone tube, the requirements for quality and performance are also very strict. The application of silicone tubes in the industry is also used in many important systems, and they play a very important role, so the product performance requirements for silicone tubes are also very strict.

Silicone tube is a kind of connection needs that can meet the needs of some large equipment, as well as the needs of catheters. This silicone tube has high elasticity, high elasticity, compression resistance, and long-term use without deformation. At the same time, it can also play a flame retardant role. The silicone tube that is widely used now is made of imported silicone. All are non-toxic, odorless, environmentally friendly, and have the excellent characteristics of high transparency.

Compared with ordinary rubber tubes, silicone tubes have better heat resistance. They can be used in a high temperature environment below 150 degrees without any change in performance, and can still be used in a high temperature environment of 200 degrees Celsius. The effect of using 10,000 times has not changed any performance, so more and more applications are now using large-diameter silicone tubing to replace the original rubber tubing. This change has also increased production security several times. Large diameter silicone tubing has strict requirements.

Silicone tube has excellent electrical insulation properties, aging resistance, chemical stability, oxidation resistance, corrosion resistance, radiation resistance, physiological inertia, good air permeability, high and low temperature resistance, and can be used for a long time at -60℃～250℃. A variety of color options provide the advantage of better aesthetics and are widely loved by everyone. Contact us to order reliable and affordable silicone tubing.

About the fuel cell silicone hose

Hiwowsport Fuel-Cell silicone hoses have been specially developed to minimize the risk of contamination of fluids or air carried by the hose with trace amounts of extractable materials found in traditional silicones, such as silicone. Silicone, while still providing all the service benefits expected of a hiwowsport silicone hose. Therefore, while it is suitable for a variety of chemical fluid/gas transfer applications where the risk of contamination needs to be minimized, it also meets the needs of applications ranging from motorsport and high-performance bicycles and cars to bus, truck and rail industries, while also Suitable for static generator applications.

In addition our standard Reinforced Silicone Rubber Hoses have 3 plies of Polyester reinforcement – this applies to all hoses up to an Internal Diameter of 50mm. For larger diameter hoses we use 4 plies of the same reinforcement to provide better pressure resistance.

Our unique manufacturing process approach allows us to manufacture custom-designed hoses, including one-piece assemblies, that limit the potential for joint failure and leaks, while improving flow. Inserts and branches can also be designed into the hose.

About hiwowsport Fuel Cell Silicone Hose, if you want to know more details, welcome to consult Haihua!