SPECIAL REPORT
full swing, developing the latest V8 turbo- charged engine. “We started thinking of what we could do with a V configuration,” added Taylor. “We did initial engine research, stresses and performance evaluations to figure out the best configuration.”
He also said Cummins has already begun
reaching out to different customer segments to pilot the new engine. “[i]f a school district was looking for a way
to improve their total cost of ownership for a lighter segment of buses, then this could open the door, if there are limited capital funds for new purchases,” he concluded. In August, Cummins announced that Nissan
will use the ISV5.0 turbo-diesel option in its half-ton Titan truck starting in 2015. Te Dodge Ram 1500 was initially set to use the ISV5.0 turbo, but that was before GM entered bankruptcy in 2009. New parent company Fiat already has its own diesel platform, the 3.0L 630T V6 EcoDiesel, after purchasing engine manufacturer VM Motori last fall.
Cummins ISV5.0 — At a Glance SPECIFICATIONS
Advertised Horsepower: 200-275 hp (149-205 kW) Peak Torque: 520-560 lbs.-ft. (705-759 N•m) Bore and Stroke: 94 x 90 mm Number of Valves: 4 per cylinder Peak Injection Pressure: 29,000 psi (2000 bar) Governed Speed: 3400 rpm Number of Cylinders: 8 System Weight: 899 lbs. (408 kg) Engine (Dry): 804 lbs. (365 kg) Aftertreatment System: 95 lbs. (43 kg)
RATINGS
Engine Model ISV5.0 275 ISV5.0 250 ISV5.0 220 ISV5.0 200
Advertised HP (kW) 275 (205) @ 3200 250 (186) @ 3200 220 (164) @ 3200 200 (149) @ 3200
Specifications subject to change.
Peak Torque lbs.-ft. (N•m) @ RPM 560 (759) @ 1600 rpm 560 (759) @ 1600 rpm 520 (705) @ 1600 rpm 520 (705) @ 1600 rpm
42 School Transportation News November 2013
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