“Actual testing of the engine provided us with an achievable goal to aim towards. Notes Tomo Ogata, who was overseeing testing of the engine. “At the outset, the goal was to create a 350 horse power engine, however as development progressed we realized that this could be further raised to 370 horse power” In order to meet demands to increase the capacity of the connecting drive unit, the team needed to devise a way to optimize the power output of the engine. By implementing strategies, such as a including a cover which comes down over the devices, the team managed to solve strength and vibrational issues. The cooling and power devices, which up until now had been attached horizontally to the engine, were fixed to the upper part of the engine.
#Yanmar 8 hp marine diesel how to#
The V8 cylinder engine is a lot wider that the inline-6 cylinder and figuring out how to equip the engine in the same space as was used previously was the biggest issue.” “30ft class pleasure boats have 2 engines alongside each other and 2 shafts.
Kenji Shiga, who was looking after the design talks to us about the struggles he came up against at the time.
However this time, as the team was working with a new base engine, the entire process needed to be reconsidered. Technology to marinize engines has been developed and refined over decades at Yanmar. For this reason the team had to devise the parts layout, on top of designing an engine with reduced vibration and noise to combat increases in the engine’s size and weight. Due to the spatial limitations of pleasure boats, auxiliaries such as the supercharger and the cooling system needed to be fixed to the side of the engine. Overcoming Rising Issues to Marinize the V8 Engineįrom Yanmar’s 8LV base engines, the 4.5L V8 engine was chosen and designed for application on boats. Meeting the Tier 3 regulations compounded by Yanmar’s continuous pursuit of furthering productivity is what led to Yanmar’s 8LV marine diesel engine. The introduction of the Tier 3 emission regulations by the United States Environmental Protection Agency (EPA) in 2012, however, necessitated a move away from the conventional mechanical fuel injection style engine design towards a common rail equipped electronically controlled engine. Yanmar’s inline 6 cylinder 6LP marine diesel engine remained a mainstay product in the 300 horse power range pleasure boat use engine market, where demand remains high, since the commencement of its large-scale production in 1997. At Yanmar he worked in the testing department at the Nagahama factory and 10 years later started working on testing for small marine engines.Įmissions Regulations Provide Opportunity For Larger Leaps Forward in Engine Performance. He began working at Yanmar in 2006 following university studies relating to internal-combustion engines. Management Division Engine Development Division In 2000 he returned to the Nagahama factory where he specialized in developing marine engines. Following on from his role in the development of industrial engines, from 1991 Kenji dedicated his work to researching how to reduce emissions at the Oyamazaki research center in Japan. 【Profile】Kenji first joined Yanmar in1986. As the engine prepares to play its vital role on the auspicious occasion of the America’s Cup, we bring you the inside story of this extraordinary engine. They overcame the challenges of meeting strict emissions requirements, and developed the technologies needed to meet the demands of our times. We bring you an interview with the team behind this remarkable engine. Incorporating Yanmar’s cutting-edge diesel technology, it is an advanced marine leisure boat engine for the next-generation. The 8LV marine diesel delivers a daunting 370 hp for smooth and powerful acceleration in a compact, low-noise, low-vibration engine. Not only were Yanmar engines chosen by the top team in this most demanding of high technology sports for their power, endurance and environmental performance, Yanmar’s marine diesel engines will also be used on the VIP shuttle boat, which takes guests out to the race course area to watch the best sailors in the world compete for the oldest trophy in international sport. Yanmar will again be providing the chase boats of defending champions Oracle Team USA with high-performance 8LV marine diesel engines and ZT drive systems. We have previously introduced Yanmar’s relationship with the America’s Cup. Yanmar will be supporting this prestigious event as the Official Marines Engines Partner. The world’s leading yacht race, the 35th America’s Cup, is almost upon us.
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