Amerikanska CAT har tagit fram en helt ny dieselmotor avsedd för fritidsbåtar. Caterpillar beskriver den som en “High Performance Diesel Engine”. Beteckningen är Cat C6.4 Marine Engine. Det är en kompakt diesel i effektområdet 335-505 hk med common rail bränsleinsprutning.
Motorn är både kompakt och kraftfull samt har låga utsläpp. Motorns arbetsvarvtal ligger på 3 400 rpm.
Den här V8:an har fyra ventiler per cylinder och en borrning på 98,2×105 mm. Den totala motorvolymen är 6,4 liter. Den högsta effekten som tas ut är 505 hk vid 3 400 rpm. Övriga nivåer är 450 hk vid 3400 rpm, 380 hk vid 3400 rpm och 335 hk vid 3400 rpm. Produktionen är beräknad att starta 2012.
Här är övrig information i den amerikanska pressreleasen:
“We’re pleased to introduce a segment-specific marine engine for our pleasure craft customers,” said David Shannon, Caterpillar Marine Power Systems Pleasure Craft Global Sales Manager. “The new C6.4 is designed from the ground up to be reliable with clean, quiet operation and require less maintenance. We’ve taken extra measures to offer a new product capable of pleasing even the most discerning marine customer.”
The C6.4 meets current exhaust emission regulations including U.S. EPA Tier II marine recreational craft limitations, the EU 94/25/EC recreational craft directive and is IMO II compliant. The engine is also capable of meeting future U.S. EPA Tier III marine exhaust emissions requirements. Reduced engine noise is achieved through innovative design in the two-piece CGI cylinder block, combining the bed plate and block casting to provide additional stiffness and subsequently lower operating noise. The High Pressure Common Rail (HPCR) fuel system also provides quieter performance through the pilot injection of fuel and integration of Piezo technology to eliminate electro-mechanical control solenoids.
“Vessel owners will immediately notice the quieter performance of the C6.4 due to significant reductions in gear train and valve noise as well as the addition of the HPCR fuel system,” noted Tony Pattle, Marine Products Engineering Manager. Tom Withers, Chief Engineer for the C6.4 project added, “A great deal of focus has been put on incorporating Caterpillar’s many years of pleasure craft marine experience into the overall package design of this product resulting in a very compact design in the always exciting V8 configuration.” Extensive laboratory testing has been completed and will continue along with on the water testing, which has already begun.
The new engine model will be manufactured in the Wimborne Marine Power Center, located in Wimborne, United Kingdom. Standard equipment on the C6.4 includes a built-in oil cooler, centrifugal water pump, self-priming sea water pump, low profile oil pan, top access to service oil level and oil fill locations as well as a single Cat heavy-duty spin-on high efficiency oil filter. The engine is equipped with an automatic fuel priming pump, 12V DC electric accessories and a solid-mounted Cat 70-pin electric plug-in connector for yacht control harness. The new C6.4 is fully compatible with the Cat Multi-Station Control System (MSCS) and MSCS II components for shift and throttle integration and Cat helm displays, including the Color Marine Power Display (CMPD).
Kommentarer
Det är en bra nyhet för svenska Sintercast som håller CAT med CGI-tekniken