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Diesel exhaust odor is more noticable and unpleasant than gas exhaust most noticeable at low vessel speeds. Below are some things to consider when deciding between a single vs.
With these thoughts in mind lets get a look at whats available in todays market when it comes to new diesel engines.
Most fuel efficient marine diesel engine. Wärtsilä 31 is recognised by Guinness World Records as the worlds most efficient 4-stroke diesel engine. Caterpillar C87 Marine Diesel Engine Courtesy CAT. Caterpillar has started delivering its new C87 an in-line six-cylinder package that replaces the C9.
With a new common-rail fuel-injection system and air system the C87 produces 650 hp at 2300 rpm and it weighs 2295 pounds dry. The concept of marine diesel engines is best for fuel efficiency are sound very interesting and worth to know about the whole concept to get high efficiency and return on investment. We must first know about that what is the diesel engine and its basic functionality.
The boat that requires a new or reconditioned marine engine before you can. With these thoughts in mind lets get a look at whats available in todays market when it comes to new diesel engines. Mercury Marine diesels are based on Volkswagens well-established TDI engine technology.
Shown is a 675-lb 30-liter engine mated to a Mercury outdrive. Photo courtesy of Mercury Marine. We introduce to you some of the most reliable clean fuel efficient quiet and lightweight diesel marine engines.
The all new Hyundai SeasAll diesel marine engines are available in sterndrive shaftdrive and waterjet. Technology exists to serve people. The ultimate mission of the marine engine is to ensure absolute safety and comfort levels for people on board.
In general the diesel engine is more fuel efficient when running a large boat but performance also depending on the type of hull of the boat the weight of the boat and the speed of the boat. Direct fuel injection could help increase fuel efficiency over a carbohydrate fuel system for smaller boats powered by an outboard gasoline system. Diesel exhaust odor is more noticable and unpleasant than gas exhaust most noticeable at low vessel speeds.
The good old gas sterndrive is the most common method of powering pleaseurecraft below 30 feet long. While not as fuel efficient as their diesel counterparts they are much cheaper to purchase and maintain. The best spot on the specific fuel consumption curve is where its lowest.
For the 420 CX Yanmar this is at 2000 RPM. Since we already know that the optimum torque is at 2100 RPM you could say that youd get the most bang for the buck out of this engine at 2050 RPM a combination of best fuel efficiency and most oomph. Most engine manufacturers would expect levels to be around 15ppm for their machinery to operate without unusual wear and tear but it is reported that average levels are around 22ppm meaning removal during the fuel treatment process on board is highly desirable.
There is an ISO standard for marine fuels which is updated at regular intervals. Gasoline engines are another kettle of fish. If you run them at full throttle the increase in wear and the fall-off in fuel efficiency are both much greater than they are for diesels.
If wear and efficiency are important to you consider the speed at which you cruise. The full-throttle limit for modern marine gasoline motors ranges from 4800 to 6000 rpm. Now Wärtsilä has another entry in the Guinness Book of Records.
For the worlds most efficient 4-stroke diesel engine. Designed for medium-sized ferries and cruise ships or small to medium. Finnish technology group Wärtsilä has introduced a gas-fueled version of its Wärtsilä 31 marine engine which is recognized by Guinness World Records as the worlds most efficient 4-stroke.
The FS MARINE provides a patented solution to reduce fuel consumption of marine diesel-powered engines auxiliary systems and reduce significantly emissions. FS MARINE solution has been field-tested on high seas certified and approved by DNV GL as the worlds first onboard hydrogen generator and injection solution with gas liquid injection mechanisms and. Diesels are more economical.
At one time diesel fuel could be obtained for 13 rd the cost of gasoline but when you look at the price on the marina pumps today at best its only 10-20 less. Yet fuel costs are insignificant when it comes. Boat-Fuel-Economy Fuel Consumption Charts Calculator Outboard motors and Boat motors Inboard.
MerCruiser - Volvo Penta Diesel Marine engines Outboard. Mercury - Evinrude - Yamaha - Suzuki - Honda - Tohatsu 2-stroke 4-stroke HP Range. 25 - 35 - 4 - 5 - 6 - 8 - 98 - 99 - 15 - 20 - 25 - 30 - 40 - 50 - 60 - 70 - 75 - 90 - 115 - 120 - 135 - 150 - 175 - 190 - 200 - 220 - 225 - 250 - 300.
MJM 29z power with single 260 HP diesel IO. Diesel IOs are twice as efficient as gas outboards. A cruise-equipped MJM 29z with single 260 HP diesel IO weighs the same as a Hunt Surfhunter 29 with twin 250 HP outboards.
Harbor cruising at 83 knots the 29z is 35x more fuel efficient. Burning 2 gph vs. The Hunts 7 gph.
The 8V 2000 M94 engines are rated at 1250 hp and there are also two 10-cylinder options as well as two 12-cylinder engines producing 1800 and 1920 hp respectively. But the 2600 hp 16V 2000 M96L remains at the summit of the high-horsepower recreational marine diesel-engine mountain at least for now. We ended up with a 40 DeFever Passagemaker with a single 185 hp Perkins diesel engine.
Blue Turtle cruises at around 6 to 7 knots and uses about 15 gallons of fuel per hour. Randy doing regular maintenance on our single Perkins engine. Below are some things to consider when deciding between a single vs.
So the hull speed for your 36-foot waterline is about 8 knots 134 x 6 8. Your proposed 6-knot speed is right at the 75-percent mark 8 x 75 6. At faster speeds drag exacts a much bigger toll on fuel economy.
Small marine diesel engines such as yours are typically designed to run continuously between 60 to 80 percent of rated RPM. The EY33 draws on Yanmars accumulated development experience and the latest simulation techniques to provide the highest power and best fuel economy of any engine in the EY series. The new engine also improves life cycle value for the customer with better component durability that has made it possible to lengthen maintenance intervals by 15 times compared.
The Greenline Hybrid yacht line is currently available in eight different models including the sleek NEO sports boat the family cabin cruising 33 39 and 40 and the 45 Fly 48 Fly 48 Coupe and the 65 OC. All of these models achieve industry leading fuel efficiency. Greenline 40 Hybrid Diesel-Electric Solar Power Boat.
The recently launched Wärtsilä 31 engine has achieved a World Record title for the most efficient four-stroke diesel engine. The listing is based on the Wärt.