Marine Forum

Yanmar Outboards

Anonymous user

05 August 2008 16:59:29

Joined: Unknown | Posts: Unknown

In the years since Yanmar introduced the diesel outboard engine (D27/D36 27~36hp ) it has created waves of excitement in the marine world.

Now, instead of the fickle performance common to so many petrol outboards, the diesel outboard presents a level of stability, savings and long-term strength that make pure sense to the commercial operator.

Tested through time and trials, these engines have proven to live up to Yanmar's aims, gaining both spectacular and solid achievements.

Twin Yanmar diesel outboards powered a seacraft for the first time across the Pacific from San Francisco to Hawaii; a record 2250 miles of non-stop running using only 385 gallons of fuel. Other diesel outboards are powering the economies of numerous coastal communities.

Now in expanded production, the Yanmar diesel outboard is ready to serve even wider in a broard array of commercial duties.

Amazing Power From Such Small Units. The secrets behind the world's smallest diesel in this class lie in the many revolutionary components and materials used.

Output Boost From New Intake Inertia Pipe. This special plastic intake inertia pipe trims down engine weight while helping the engine pump out more power.

Wide Use Of Aluminum Lightens Problems.
Aluminum, used for most engine parts, takes away a lot of weight and also the corrosion problems of ferrous parts.

A Unit That Is Set To Make Diesel History! The super mini fuel injection pump and nozzle used in these diesel outboards is bound to set the standard for future FIE. The highly miniaturised unit injector is not only super-light but has multiple characteristics that best match with the high speed, direct injection diesel.

1. It gives about TWICE the injection pressure of a conventional injection system. This means efficient direct injection and combustion at high speeds.

2. Its precise injection timing allows stable combustion over the full speed range with none of the injection lag associated with conventional systems.

Overhead Cam Shaft (OHC) Synchronized For High Speed. The overhead cam shaft is driven by a timing belt and is highly synchronised with the engine performance. In a creative design feature it also drives the intake/exhaust valves as well as the unit injector, greatly reducing overall weight and volume.

Mono-bloc Casting For Cylinder Block And Heads. This unique, one-piece aluminum casting gives a sensational weight reduction yet loses nothing in strength. It also eliminates the need for gaskets and, being in a mono-block form, is leakfree. In another achievement of Yanmar's special technology the cast-iron cylinder liner is directly bonded to the body.

New Chamber (YPBC) Maximises Combustion Effect. The all important combustion chamber has been perfected for the direct injection system in these engines.

Yanmar was first to adopt the direct injection system for such small high speed diesels and, to take full advantage of the technology, created the Plum blossom Chamber, now famous in the diesel industry. The happy result for the user is an extra packet of power with every low fuel needs.