The Shift to Clean Diesel Engines

Pollution from engine emissions has always been a concern as heavy duty trucks became the go to transportation option for freight and cargo shipments. In 2000, the U.S. Environmental Protection Agency recognized the dangers emissions from heavy-duty trucks and buses could cause and developed rules and regulations to limit them.  These new standards were designed to cut the allowable levels of sulfur in diesel fuel by 97% by 2010.  By 2007, all heavy-duty diesel trucks sold had to have particulate emissions levels of no more than 0.01 grams per brake horsepower hour.

Inline 3 Cylinder Mitsubishi Clean Diesel Engines

Here in 2016 we are witnessing the results of these regulations.  According to the Diesel Technology Forum (DTF) more than 40% or about 4 million of the 9.5 million medium and large diesel trucks on the road have shifted over to newer technology clean diesel engines.  These trucks have particulate emissions levels near zero, which is resulting in clean air benefits being felt all over the U.S.  These new engines also are benefiting truckers by showing 3-5% improvements in fuel economy from the older style diesel engines.

The Rise of the New Clean Diesel Engines: 

In Indiana, Utah, Oklahoma and Texas, more than 50% of all trucks boast the new recommended clean diesel engine technology. California and Oregon are close behind with growing numbers of newer diesel truck registrations.  It is evident that the engine has achieved something almost impossible – it has satisfied the mandates of the Environment Protection Agency and has managed to incentivize its adoption through enhanced fuel efficiency. The future of emissions pollution control in the US looks bright.

Central Diesel is Proud to be Part of the Endeavour for a Cleaner US:

At Central Diesel we supply and repair clean tech diesel engines.  Our highly experienced sales and service staff can help you find the solution to your diesel engine needs.  Working with a variety of brands, we are factory authorized for numerous manufacturers.  For more information on the clean tech diesel engine services we can offer you, contact us and be sure to follow us on Twitter and LinkedIn.

Central Diesel Service and Engineering Capabilities

At Central Diesel, Inc. we specialize in supplying a variety of different industries including agriculture, construction, marine, mining, municipalities and transportation industries.  Our mission is to supply diesel engines and parts to meet the needs of all these fields.  We are more than just a product supplier though.  Our service department is an authorized, factory trained, fuel injection and diesel engine specialist.

Repair of a diesel engine

Service Department Capabilities: 

Our highly experienced service department has numerous capabilities to meet all your needs.  Services include diesel engine assembly, diesel engine rebuilding, as well as having fabrication and engineering capabilities.  Some of the capabilities we excel at include custom repower packages to eliminate down time and reduce TCO, as well as custom designed packages to meet current and future requirements and meet all current and future EPA emissions regulations.  At Central Diesel we also warranty specific packages from one to five years.

Our capabilities do not stop at just diesel engine rebuilds.  Our service and engineering department also can custom build generator sets, hydraulic pump packages, irrigation pumps and power units.  We also keep 5-600 HP diesel engines in stock to be able to be used in these custom packages when necessary and can supply engines up to 5000HP.

At Central Diesel we are always looking to expand our engineering and service capabilities.  Currently we offer diesel engines & assemblies, rebuilding and parts on the below brands:

·         Deutz

·         Nissan

·         Cat

·         Perkins

·         Hatz

·         Lister-petter

·         Cummins

·         Kubota

·         John Deere

·         Detroit Diesel

·         Continental

·         Isuzu

·         Lombardini

·         Deutz-Ruggerini

·         Mitsubishi

·         Kohler

·         Cat/Perkins

·         Faryman

·         Volvo

·         International

·         Yanmar

For more information about our service and engineering capabilities, please visit our website or contact us here.  At Central Diesel we value 100% customer satisfaction, and our top notch service department allows us to provide this for all our customers. At Central Diesel, our greatest assets are our customers and our employees.


Factory Authorized Common Rail Injector Testing and Repair

At Central Diesel, Inc., it is our mission to be a quality supplier of diesel engines, parts and services that offer unsurpassed solutions to our customers.  Besides being a product distributor, we have also been a specialist in fuel injection since our company was created in 1972.  While manufacturers have come and gone over the 40+ years we have been in existence, we are always working to be factory authorized for the products we test and repair.

Fuel injection system

To make sure our customers receive the best service available from us, we are always working to improve our capabilities.  At Central Diesel we are continually investing in personnel, equipment, training, technologies and practices to supply our customers with the best service available.   An example of how these investments have led to change over the years is how in 1972, Central Diesel rebuilt a fuel system to factory specifications and warrantied that fuel system for 90 days.  Today when a fuel system is rebuilt by us to factory specifications, we warranty that system for 14 months.  This big increase from 90 days is because we know the quality of our work, and that the fuel system, if properly installed and maintained by the customer or end user will last at least that long. In most cases, we do not see the fuel system again for many years or sometimes with a different owner.

As of 2016, we are factory authorized for the following manufacturers:

  • Stanadyne
  • Delphi (CR Fuel Systems)
  • Bosch (CR Fuel Systems)
  • Yanmar
  • Denso (CR Fuel Systems)
  • Zexel
  • Alliant Power
  • Siemens

In addition to our fuel injection and diesel engine services, we also custom build generator sets, irrigation pumps, hydraulic pump packages and power units.   Our services include rebuilding, parts and other custom services for the diesel fuel injection markets.  Visit our website to learn about our full capabilities and offerings.

Where are Diesel Engines Used?


When most people think of diesel engines, they envision a big rig truck going down the highway.  Trucks aren’t the only place where diesel engines are used though.  Many different types of vehicles use diesel engines due to their efficiency and durability, and many industries rely on them to carry out important tasks.  Besides vehicles, important tools like generators are also run by diesel engines as they are a better bet not to fail than a gasoline powered generator.

Where are Diesel Engines Used

Diesel Engines Uses and Applications:

  • Passenger Cars:  In Europe and India, passenger cars powered by diesel engines are very common.  At city speeds, diesel engines tend to be more economical than gasoline powered engines.  They also tend to last longer, making them more reliable.  Diesel-powered cars are generally considered a low CO2 option, making them popular for the environmentally conscious in Europe as well.  While not all that common in the United States, they could grow in popularity as drivers continue to want to lower the carbon emissions of the vehicle they drive.
  • Railroad Locomotives:  Diesel engine locomotives are popular throughout the world in areas where track electrification is not feasible.  They are the engine type of choice for cargo hauling freight trains which have heavier loads and require a strong engine.
  • Marine Vehicles:  Many different types of marine vehicles from cruise and cargo ships to privately owned leisure boats use diesel engines.  Reciprocating diesel engines are used in many marine vehicles due to their fuel economy and operating simplicity as compared to other engine types.  Their ability to power larger vehicles makes them a popular choice for ships and boats.
  • Construction and Farming Equipment: The reliability and power of diesel engines make them the engine of choice for large construction equipment like front loaders and bulldozers.  Diesel engines are also used in many types of farming equipment, such as tractors due their durability and efficiency.

At Central Diesel we offer a variety of different diesel engines for various applications.  Visit our website to see our full product line and follow us on Twitter and LinkedIn for the latest company news and updates.

Diesel Fuel Emissions Regulations

Diesel engines are a highly efficient and durable choice to power vehicles such as trucks, ships, locomotives and equipment for farming, construction and mining.  All types of fuel burned in engines produce emissions that are released into the environment.  They can contribute to air pollution which can have environmental and health effects.  In an effort to reduce the amount of air pollution that is released from diesel fuel burning engines, the EPA has standards in place to reduce pollutants, air toxics and other detrimental emissions.

The amount of pollution that is produced when diesel fuel is burned in an engine is linked to the amount of sulfur that is in diesel fuel.  The higher the level of sulfur in the diesel, the higher the amount of pollutants that are released into the air when the diesel is burned.  This air pollution can than lead to health issues such as heart and lung disease, as well as causing damage to the environment by damaging plants, crops and water resources.

To decrease the amount of pollution that is released form diesel emissions the EPA has created a set of standards that all diesel fuel has to meet. Vehicles that travel on roads like cars and trucks must use an ultra-low sulfur diesel (ULSD) that is a 15 ppm sulfur specification.  As of 2014 all nonroad, locomotive and marine diesel fuel used must also be ULSD.  As of 2015 large marine diesel engines, or category 3 engines, operating with the U.S. Coast Guard established Emission Control Areas must generally use diesel fuel with 1,000 ppm sulfur or less.  These standards have helped to reduce harmful pollutants from diesel emission into the environment.

A diesel engine in the Central Diesel Showroom

At Central Diesel we offer a variety of different diesel engines.  The diesel engines we offer also meet a variety of EPA and state certifications such as U. S. EPA Non-road Tier 3 (with letter of exemption from EPA), U. S. EPA Non-road Tier 3 for ratings 56 kW and higher (with letter of exemption from the EPA), U.S. EPA Non Road Tier 4, U. S. EPA Non-road Tier 4 Interim for ratings less than 56 kW, and California ARB Non-road. When it comes to environmental concerns that effect global warming (greenhouse gases, carbon footprint, etc.) the diesel engine leads all internal combustion engines in protecting our planet today and into the near future.  For more information and engine specs, take a look at our website.

Why You Should Choose Diesel Engines

The diesel engine is increasingly becoming a standard for drivers who need dependable and cost-efficient transportation. Relying on compression ignition and diesel fuel, inventor Rudolph Diesel’s motor has spawned an industry known for fuel economy. With fuel prices continuing to rise along with demand, high-powered diesel engines can provide benefits that outweigh those of engines run by gasoline.

How Does Diesel Work? 

Diesel Engine in the Central Diesel ShowroomOne major difference between diesel and gas engines is their ignition process. Gas engines run with spark ignition. Diesel engines use compression ignition. The fuel pulls into the engine and is subjected to high compression. That compression creates heat; diesel engines function at much higher temperatures. When the system achieves optimum pressure and temperature, the fuel that enters the engine ignites, with the heat of the combustion chamber causing a reaction between the diesel and the oxygen. A vehicle’s exhaust systems can expel any by-products.

Diesel engines receive fuel and air at varying junctures during operation. A gas engine receives a mixture of gas and air to run. A diesel engine compresses only air, so intake throttling is unnecessary to control power within it. Diesel engines require a fuel injector to operate, while gasoline engines use a carburetor or gasoline injectors.

But why buy diesel? Is diesel better? There are certainly pros and cons of diesel engines. It’s no secret that diesel engines can be noisier, and their fuel typically costs quite a bit more than standard gasoline. The reason for this is density. Diesel’s energy density is far higher, so the same amount of diesel provides much more energy than its counterpart. Diesel Fuel has a longer combustion process (burning process) which results in a higher torque curve. As a result, diesel offers much higher mileage. These engines also have a long lifespan with proper maintenance. 

Adding to that their greater torque and functionality in colder temperatures, the advantages of diesel engines give it applications in heavy-duty transport vehicles like long-haul trucks and equipment, power generators, and construction equipment. Overall, this engine type continues to draw greater attention for its fuel-related advantages.

Benefits of Using Diesel Engines

Why is diesel better than gas? A diesel engine in the showroom at Central Diesel

  • Durability. Diesel engines last longer than others. A variety of reasons contribute to this fact. Diesel engines use stronger parts to support stressors like heavier vehicles or machines. The fuel’s lubricating properties are far superior to those of gasoline, which is another element credited with better reliability and strength.
  • Energy density. Another benefit of diesel is that you are able to extract more energy out of it than gasoline, and so less diesel is necessary for longer distances.
  • Fewer parts. As diesel engines do not have distributors or spark plugs, fewer parts can lead to fewer necessary tune-ups. However, this is with the caveat that diesel engines do require regular filter and oil changes to continue running smoothly due to diesel’s high viscosity.
  • Fuel efficiency. The greatest advantage diesel offers is its fuel-efficiency, which translates to cost savings. Diesel engines burn less fuel than a gas-powered vehicle in the long run while doing the same amount of work. If you have two automobiles, one diesel, and one gas, and fill them with the same amount of fuel, you will travel much farther in the diesel vehicle.
  • Improvements in clean energy. Diesel engines are cleaner than before, with a smaller carbon footprint. Scientists discovered new methods in 2015 of harnessing diesel for even cleaner-burning engines. The estimate at the time was that these new engines could be available to the public within five to 10 years.
  • Safety. Another factor in the growing demand for diesel engines is that of safety. Simply put, diesel isn’t remotely as dangerous as gasoline. The fuel and its vapors are much less combustible and volatile. Diesel also doesn’t release the same amount of fumes as gas.

Diesel Engines & Products From Central Diesel, Inc.

The benefits of diesel cars and engines make them a great choice for applications in the marine, rental, mining, construction, military, state and federal government, agriculture, and transportation industries. Central Diesel can help you meet your engine requirements in these fields.

We began in 1972 as a supplier of diesel engines and parts. Since then, Central Diesel is proud to have gained over 4,000 loyal customers by striving for 100% customer satisfaction. We continue to be a distributor for a growing number of esteemed product lines such as Deutz and Mitsubishi.

Please contact us to see our wide variety of diesel engines & learn how we can serve your diesel needs. You can also request further information on our products.