Monday 19 May 2014

Toyota set to be next for Cummins ISV5.0 diesel

Cummins Inc. looks to have found another customer for its ISV5.0 V8 diesel engine that is planned for introduction n Nissan’s Titan pick-up truck.
According to, Toyota Motor Corporation is the new customer for the V8 diesel.

Even with Toyota adding another string to its bow, Cummins executives no doubt would like a third customer for its latest engine. Together they would help bolster production of the Columbus Engine Plant where the new generation engine is to be built.

In our item Cummins readies for new ISV5.0, 14 October 2013, we stated: “However, for sure Cummins Inc. will require more than the order from Nissan (to power the Titan pick-up truck) to keep the plant running. So expect the company to announce other orders as time goes by. The Titan may not be the world's best pick-up truck but for Cummins Inc. it is a good start - and another breakthrough for CGI”.

And a new generation engine it is too for Cummins Inc. It is the first time the company has committed itself to a ‘production’ engine with a compacted graphite iron (CGI) cylinder block.

The company has trialled many development engines with the material, now widely favoured as ‘the’ material for the cylinder blocks and heads of high performance diesel engines.

It has taken a long time to convince Cummins executives of the merits of the material, but finally it has bitten the bullet. The proof now will be in the end products.

Cylinder blocks for the ISV5.0 will be sourced from Tupy SA, headquartered in Joinville, Brazil. As CGI process control specialist SinterCast noted on 29 August 2013: “The 5-litre V8 turbodiesel will be supplied by Cummins, one of the world’s largest and most respected diesel engine manufacturers. With more than 300bhp (225kW) and approximately 550lbft (750Nm) torque, the 5-litre V8 diesel will provide approximately 25 per cent more pulling power than the current gasoline-engined light duty pick-ups in the US market.”

“The SinterCast-CGI cylinder block used in the Cummins diesel is produced at the Tupy foundry in Brazil. Cummins has also indicated that the engine will be available in other applications such as recreational vehicles and commercial vehicles, providing opportunities for increased production volumes,” added SinterCast at the time.

According to the 2016 Toyota Tundra will come with a V8 Cummins diesel engine. This move can be considered as an announcement of more important diesel updates that will come in a couple of years, according to the website.

The website notes the Cummins turbodiesel engine is already installed in the 2015 Nissan Titan. As for the Tundra specification, at this point the site points out it is impossible to say “whether the engine nested under the hood of the 2016 Tundra will be exactly the same as the Titan’s version”. However, the SinterCast statement gives a few clues.

The website declares, however, that no matter the power output and fuel economy, “this engine is the best solution when it comes to the powerful diesel engines for pickup trucks”.

And certainly, Toyota is a ‘good’ customer for Cummins Inc., helping to restore the US engine company’s image after it took so long to find the ‘right’ customers for the engine it has planned for ages to introduce.

However, the website suggests that while the 2016 Toyota Tundra diesel version will be powered with a V8 Cummins, in the future, the truck will get a freshly developed Toyota diesel engine, which “could outshine other diesel engines”.

The website adds: “Actually, their plans are more elaborate than that and include the future regulations regarding the emissions and fuel economy. The 2016 Toyota Tundra won’t have a burden of introducing a new engine, where a lot of it can go wrong. It will have a reliable engine, which is a worthy addition to the 2016 Tundra engine line-up”.

If Toyota does have a new diesel engine on the stocks, the big question is: Will Toyota follow the Cummins route and adopt CGI for the block?

According to Toyota has form. The website notes: ”The CGI 5.8-litre blocks used in Toyota’s NASCAR truck programme weigh a mere 195lb and feature 3mm-thick cylinder walls. In theory, a CGI block can be final-produced to a lighter overall weight than an equal-sized aluminium block with equal strength/density (although it’s suspected that not many builders take advantage of this for fear of giving up the rigidity factor).”

Time will tell.                                  ∎

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