Darlington, UK (Sept 15, 2015) – As part of Cummins Darlington’s 50th anniversary the regional technical centre is recognising the achievements made in engine development from the original Small Vee to the latest ISB engines.

Jonathan Atkinson, Technical Director said: “Cummins Small Vee engines were revolutionary in their design at the time.  They were developed to fit in and replace a petrol engine without modification to the drive train.  A large bore and short stroke, packaged in 90 degree Vee configuration enabled a high displacement for a relatively small diesel engine.”

Cummins released the family of Vee engines in the 1960’s.  The first models introduced in the US in 1963 were the 9.6 litre V6 VIM and 12.9 litre V8 VINE engines.  These engines were too big for a number of applications, and scaled down versions were designed.  This resulted in the 5.8 litre V6 VAL and 7.7 litre V8 VALE engines, which were built in Darlington.  A revamp moved the VAL to 6.2 litres and the VALE 8.3 litres.  They powered trucks, buses, construction equipment and boats from 155 to 210 hp for key customers such as Dodge, Ford, Daimler and many others.

“Some of the key design features of the Small Vee engines carry on into today’s products such as an efficient high pressure fuel system, cylinder heads with 4 valves per cylinder, a rear gear train configuration, a high power to weight ratio, and major components with the latest materials designed for durability and reliability,” added Atkinson.

Following a major upgrade in 1986 Darlington production moved to the B Series engines.  Originally 3.9 and 5.9 litre displacements, they are the forerunners of the latest 4.5 and 6.7 litre units produced today.  Significant technology improvements have been made since the first on-road emissions regulations in 1993 to where we are today at Euro 6.

“Product development has been an important part of the Darlington’s success for many years, and has had a significant impact since advent of the B Series in the early 1980’s.  We have continued to invest and upgrade the facilities, developing the latest engine technologies meeting our customers’ needs and keeping Cummins competitive in the market,” continued Atkinson.

An example of engineering achievement can be seen in a comparison of the original VALE V8 engine versus today’s Euro 6 ISB6.7 engine.  Technology development has enabled 67% higher power with 100% higher torque yet displacement and weight are 20% lower.  This gives significant power-to-weight improvements with 99% cleaner in emissions. 

“Our latest success has been reaching the Euro 6 near-zero emissions level.  We are not content to stop there though, and work is continuing on the ODB C section of the legislation for 2017 with a focus on product and efficiency improvements,” concluded Atkinson.

About Cummins
Headquartered in Columbus, Indiana, (USA) Cummins employs approximately 48,000 people worldwide and serves customers in approximately 190 countries and territories through a network of more than 600 company-owned and independent distributor locations and approximately 6,500 dealer locations. Cummins earned $1.65 billion on sales of $19.2 billion in 2014. More information can be found on www.cumminsengines.com.  Follow us on Twitter at @cumminseurope.