Diesel Progress North American

FPT said, and actual production will start in line with Tier 4 final legislation implementation. All of the company’s engines will be Tier 4 final compliant, specifically the NEF Series ( 4. 5 and 6. 7 L engines covering a range of 107 to 308 hp) and the Cursor Series ( 8. 7, 11. 1 and 12. 9 L engines rated from 268 to 690 hp).

KOHLER

Kohler’s newly unveiled Kohler Direct Injection (KDI) range of 1. 9 and 2. 5 L engines are designed to meet Tier 4 final emissions requirements through a range of heavy-duty diesel technologies normally not found on smaller engines. These include a 29,000 psi electronically controlled common rail fuel injection system and cooled exhaust gas recirculation.

Kohler’s new Kohler Direct Injection (KDI) diesels meet Tier 4 final with no DPF, thanks in part to a Denso high-pressure fuel injection system.

The result, the company said, is more horsepower, improved torque performance and fuel economy, and perhaps most significant, no need for DPF aftertreatment. The KDI diesels will also be available in mechanical versions that will target heavy-duty industrial and construction markets in regions with lower-grade fuels.

The KDI engines are a clean-sheet design covering five engines in ratings from 41. 5 to 74.2 hp. To help optimize combustion, the cylinder heads incorporate four valves per cylinder with the injector positioned vertically at the center of the combustion chamber, a design that in combination with intake manifold and combustion chamber geometry, optimizes fuel atomization and mixing in the combustion chamber, the company said.

Engine cooling was also a significant development focus, and the engines incorporate a two-stage cooling configuration with a charge-air cooler and EGR cooler designed to optimize heat exchange without increasing overall size.

Production of the KDI engines is scheduled to begin early in the third quarter of this year at Kohler’s Lombardini engine facility in Reggio Emelia, Italy.

MTU

MTU was one of the first off-highway engine manufacturers to embrace SCR technology and it will continue to be a linchpin for the company’s construction and industrial (C&I) engines in meeting Tier 4 final standards.

From 2014, MTU will be introducing its new Series 1000, 1100, 1300 and 1500 engines with outputs ranging from 134 to 617 hp and will utilize SCR with no DPF. The company said the new engines will offer fuel economy improvements of up to 5%, an increase in service life of up to 20% and higher torque at low engine speeds, when compared with their Tier 4 interim counterparts.

The program will be extended to 978 hp with the introduction of Series

From 2014, MTU’s Series 1500 will utilize SCR with no DPF.

1600 engines from 2014, which will rely on high-pressure common rail injection, two-stage turbocharging and cooled exhaust gas recirculation. MTU placed particular emphasis on optimizing the combustion process in order to minimize fuel consumption. Overall, customers will benefit from

SPECIAL REPORT

an integrated system with low rebuilding and operating costs.

“We are proud that, in the future,
we will continue to be able to offer
our customers engines without die-
sel particulate filters for all construc-
tion industry applications,” said Dr.
Ulrich Dohle, chief technical officer
of Tognum, MTU’s parent company.
“They are cleaner than ever before
and they use even less fuel than the
current engines.”
The Series 2000 C&I engines for Tier
4 final covers a power range from 752
to 1560 bhp and will meet the emissions
limits through combustion optimization
and in-engine technology enhance-
ments, without the need for aftertreat-
ment, MTU said. The new-generation
Series 4000 C&I engines for Tier 4 final
will be launched in 2015, covering a
range of 1070 to 4020 bhp in 8-, 12-,
16- and 20-cylinder configurations.

PERKINS

Perkins showed its first Tier 4 final emissions-compliant engine at last year’s ConExpo, the 400F, which is the latest addition to its 400 Series diesel engine range.

With outputs to 61 hp, the 400F diesel has a 97% carry-over of components from the previous Tier 4 interim engine. Perkins said the only addition that equipment manufacturers will see is the aftertreatment, which has been designed to be as compact as possible and offers flexible mounting arrangements to ease installation.

The first of Perkins Tier 4 final diesels to be introduced is an SCR-equipped model 404F. With outputs of up to 61 hp, the 404F has 97% of the components of the Tier 4 interim version of the engine.