Caterpillar’s New C175-16 Marine Propulsion Engine

By Keith Henderson at November 22, 2011 02:43
Filed Under: Company News

Caterpillar Marine Power Systems introduced last week, an addition to its range of diesel propulsion engines. The new V16 marine engine is designated C175-16 and has a bore of 175 mm (6.89 in) and stroke of 220 mm (8.66 in) giving a cylinder volume of 5.3 ltr. The C175 bridges the gap between the high speed 3516-HD with 170 mm bore and 215 mm stroke and the medium speed C280 engine series with 280 mm bore and 300 mm stroke.

Caption: Caterpillar’s latest addition to the marine range, the 85 liter V16 cylinder
C175-16 is rated up to 3,420 hp (2,550 kW) at 1,800 rpm.
Image credit: Caterpillar Inc.

The C175 series was first announced in 2006 for other applications, in three different cylinder configurations: as a 64 ltr  V12, an  85 ltr V16 and a 106 ltr V20. Starting with the V16 cylinder version, the series commenced manufacture in 2007 at Caterpillar's Lafayette, Indiana, Large Engine Center (LEC).
The new C175-16 model meets EPA Marine Tier 3 and IMO Tier II emission requirements with outputs of 2,683 hp to 2,907 hp (2,011 kW to 2,168 kW) at 1,600 rpm and 3,003 hp to 3,420 hp (2,239 kW to 2,550 kW) at 1,800 rpm. C175 is already available for some other off-road applications meeting EPA Tier 4 requirements.

The C175-16 features  ACERTTM Technology with optimized turbocharging and aftercooling. Cat’s common rail fuel system with injection  pressures up to 26,000 psi (180,000 kPa ), assists in delivering low emissions levels to comply with regulations without after treatment.  Oil change intervals have been extended to1,000-hours.

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