Honda R& D Co.,Ltd

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Power Products R&D Center: Research and development for general-purpose products that provide

Many consumers throughout the world use Honda’s power products, as well as its automobiles and motorcycles. The Power Products R&D Center develops generators, tillers, lawn mowers, snowblowers, and general-purpose engines that function as the heart of such equipment, and also conducts research and development for a wide range of useful power products for a high quality life for people, such as outboard motors, household gas engine cogeneration units, and electric 4 wheel scooters.
In development, Honda is actively committed not only to quality, user-friendliness, and economic efficiency but also to the increasingly serious issues of global warming and how to improve energy efficiency. Honda has long been a leading company achieving low exhaust gas emissions, high fuel efficiency, low noise, and other aspects.

Dynamo Test Lab

Dynamo Test Lab

  Outboard Motor Endurance Test in Circulating Water Tank

Outboard Motor Endurance Test in Circulating Water Tank

Lawn Test of a Lawnmower

Lawn Test of a Lawnmower

  Digital Mock-up Model Review

Digital Mock-up Model Review

High Temperature Test Room

High Temperature Test Room

  Design Review

Design Review

Developing household-purpose gas engine cogeneration units

The Power Products R&D Center develops household gas engine cogeneration units.
Honda's household gas engine cogeneration units are energy-saving equipment that generate electrical energy with its engine and generator and also can use heat energy efficiently collected from hot waste heat generated by combustion as heating for water and room air.
The third-generation MCHP1.0K2 cogeneration unit mounts the Extended Expansion Linkage Engine(EXlink)*1 which has a unique trigonal link for a higher expansion ratio. The EXlink achieves a thermal cycle based on the Atkinson cycle with a high expansion ratio to offer an engine system having a longer expansion stroke than its intake stroke with the aid of the company's newly developed trigonal link mechanism, and thus has succeeded in becoming the world's first mass production small-sized gas engine. The model compresses a small amount of fuel and air, burns the gas mixture, expands it to a larger volume, and reaches the maximum combustion energy by an expansion ratio which is 1.4 times as high as the compression ratio.
By increasing the heat recovery of the gas engine and the inverter's generation efficiency, Honda achieved a total thermal efficiency of 92%.*2 This is an environmentally friendly product which reduces carbon dioxide emission by 39% per operating time compared with cases involving thermal power generation and a conventional water/room heating system, and which can be expected to effectively use resources and energy.

*1: EXlink is a coined term for "Extended Expansion Linkage Engine" and a trademark of Honda.
*2: A standard for low heating value (LHV) at an LLC water dispenser temperature of 75°C from the Honda household purpose gas engine cogeneration unit (MCHP1.0K2).

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