Benchmark new engines for Yanmar
Yanmar has a new series of small marine diesel engines which it says will set a new benchmark in propulsion technology by bringing the benefits of common-rail fuel injection technology to units of below 110mhp.
The JH-CR series are digitally controlled common-rail engines with power outputs starting as low as 45mph suitable for both small planing craft, such as RIBs, tenders and day cruisers, as well as larger displacement powerboats and sailing cruisers of up to 60ft.
Floris Lettinga, Yanmar Marine, said: “Ever since the early 200s diesel engine manufacturers have been using common-rail fuel injection to meet ever tighter emissions regulations.”
“With their high power density, greater efficiency and easy installation they are also a highly attractive proposition for repowering.”
He pointed out that these high-pressure systems deliver highly atomised fuel to injectors via a single pipe to give improved performance and better fuel economy with reduced emissions and smoother, quieter running.
Until now these systems have been available only with engines of more than 110mhp. Yanmar’s four all-new diesels offer all of the above benefits with power ratings of 45, 57, 80 and 110mhp.
The small and compact and lightweight four-cylinder units fall within the requirements of the USA’s EPA Tier 3 and the similar EU RCD2 (2016) emissions regulations.
The ‘plug-and-play’ JH-CR 2.19 and 2-litre engines have also been designed for easier boatyard installation. Fitted with a signal converter that operates with NMEA2000 protocol, they can be directly connected to the integrated electronic instrument systems to provide full engine data on multi-function displays.
Another special feature of the series is that they offer a secondary alternator option, with a choice of 12Volts at 125 Amps and 24 Volts at 60 Amps.
The new engines will be on display on stand G57 at Boot Düsseldorf 2015.
By Anne-Marie Causer
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