Chicago Police Choose Cummins QSM11 For Repower
A lot of things have changed in the world of marine power since the Chicago Police force took delivery of two 44-foot patrol boats from Gladding and Hearn in the early 1980s. One of these changes is performance expectations, another is emission regulations. The police force was looking for power to meet both of these standards. The boat was built with a pair of eight cylinder two stroke engines rated at 325 HP each. The Police force is replacing them with a pair of Cummins six-cylinder QSM11 engines rated at 535 HP each. The new engines are being delivered with Twin Disc MG5114A 1.92:1 gears.
The QSM11 is equipped with the Quantum System, a full_authority marine electronic and fuel and control system with a range of standard and optional features. Standard features of the 6_cylinder in_line 11_liter displacement QSM11 include an Engine Control Module (ECM), electronic engine sensors, diagnostics, engine speed control and analog displays. Compact and light weight, the engine is marketed as an alternative to "stretched" engines of smaller displacement. The QSM11 meets marine emissions regulations for new construction and repowers.
At 535 horsepower (399 kW), the engine boasts the best fuel economy offered in its power range (.345 bsfc). It also features a precisely matched Holset turbocharger and seawater aftercooling. Originally introduced in October, 1998, the QSM11 is also available in 635 hp for recreational high_output applications and 580 hp for commercial intermittent applications.
The repower is being carried out at MCM Marine’s shipyard in Sault St. Marie Michigan.
For more information contact:
Gary Llweleyn Cummins Northern Illinois,
John Laka Cummins Great Lakes, Inc.