What is the difference between common rail diesel

Though CRDI is just a bit more expensive than other diesel engine technologies, you can save a lot in the fuel costs since less fuel is wasted. Turbocharged Direct Injection, or TDI, is a turbo diesel engine design that has the features of turbocharging and cylinder direct fuel injection. It was developed by the popular Volkswagen Group in Europe.

TDI has very selected compatible automobiles, especially for those vehicles produced by Volkswagen. How does TDI work? TDI uses direct injection. As a result, your engine has more power and greater efficiency. TDI has a low surface area which reduces heat loss, thus increasing engine efficiency with minimal combustion noise.

CRDI is a bit more expensive than other diesel engine technologies, but you can save a lot in the fuel costs since less fuel is wasted. Cite APA 7 Franscisco,. Difference Between Similar Terms and Objects.

MLA 8 Franscisco,. Common rail is a fuel injection system found in modern diesel engines. Common rail systems provide a level of flexibility which can be exploited for class leading emission control, power and fuel consumption. This enables Original Equipment Manufacturers OEMs to design for optimum performance and exceptional end-user value across a range of machines and applications. An increasing number of modern diesel engines employ common rail direct injection CRDi fuel systems for the flexibility they provide while meeting the most stringent emission control standards.

In common rail systems, the fuel is supplied to the engine under pressure with electronically controlled precision. This provides a level of flexibility which can be exploited for class leading levels of emission control, power and fuel consumption. Perkins applies CRDi technology to its electronic product offerings in the , , and Series.

The pressure is controlled by a fuel pump but it is the fuel injectors, working in parallel with the fuel pump, that control the timing of the fuel injection and the amount of fuel injected. In contrast earlier mechanical systems rely on the fuel pump for pressure, timing and quantity.

A further advantage of the CRDi system is that it injects the fuel directly into the combustion chamber. The indirect injection IDI system in older engines injected fuel into a pre-combustion chamber which then fed the main combustion chamber. CRDi ensures the fuel injection timing, quantity of fuel and atomisation or fuel spray are controlled electronically using a programmable control module.

This allows multiple injections at any pressure at any time within pre-defined limits , providing a level of flexibility which can be exploited for better power, fuel consumption and emission control. Perkins has a great deal of experience with applying CRDi to its electronically controlled engines. The experience gained over the past 10 years ensures we deliver a competent and capable product at the forefront of prime mover solutions. With this system, a small amount of fuel is injected into the cylinder before the full injection to optimize timing and fuel quantity.

This helps to make the engine more fuel efficient overall. You'll also be getting more power as a result, while decreasing the amount of noise and vibrations produced by the engine. The higher pressure capabilities also allow for increased efficiency and improved emissions. Some even point out that the full possibilities for this technology haven't yet been realized, leading to likelihood of even further improvements being made to the overall design and function in the future, especially as regulations continue to change.

While the common rail injector system has been in production for much less time than other injection types, it has grown in popularity, and that doesn't seem to be slowing down. It does, however, bring with it its own unique set of problems.

It is more complex a system as a whole, which can lead to a higher price tag when it comes to replacing components. Because it maintains fuel at a higher pressure for longer, more components are affected by that pressure. This can result in an increased risk of damage to other components.

It is very sensitive to contaminants, more so than other injector types. In fact, one of the leading causes of failure in common rail systems is fuel contamination, yet it is one of the most frequently overlooked. If you notice a decrease in fuel economy and think it might be due to a problem with your common rail fuel injectors, you might want to have your fuel quality tested. In the end, your fuel injection type is decided by the type of engine you have, and you're limited by the modifications made to that engine and its components.

It's good to know what fuel system it is, though, to help ensure you're getting the proper parts for it. If you're buying a new engine, this is an important consideration to take into account, because while a unit injector engine might be less expensive up front, it might end up costing you more as components stop evolving and become harder to find.

A common rail injector engine, on the other hand, will cost you more, however it will save you money at the pump, and improvements are being developed all the time. Got injector questions? We've got answers!