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Technical Paper

Honda Formula One Turbo-charged V-6 1.5L Engine

The “RA168E”, a turbo-charged V-6 1.5-liter engine, was developed by Honda Motor Co., Ltd. for the 1988 Formula One Championship Race events. Despite boost restrictions (2.5bar), the engine boasts a maximum power of 504 kw (685 ps), which is equivalent to 336 kw/ℓ (457 ps/ℓ). The development of improvements on the fuel consumption of this engine allowed the achievement of a minimum brake specific fuel consumption of 272 g/kwh (200 g/Psh). This paper Introduces major specifications, along with power output and fuel consumption characteristics of the RA168E racing engine. In addition, the effects of intake air temperature, boost, air-fuel ratio, fuel temperature and fuel ingredients on fuel efficiency and power output are presented.
Technical Paper

Development of the High-Power, Low-Emission Engine for the “Honda S2000”

The two liter DOHC-VTEC engine developed for the Honda S2000 produces 179kW (240HP, which is 120HP per liter). It is the highest output power among all naturally aspirated two liter engines ever mass-produced. It also achieves an exhaust emission level within National LEV standards. The new engine utilizes a redesigned VTEC cylinder head, in which MIM (metal injection molding) rocker arms are used. The new cylinder block with a ladder frame structure for its lower part, a newly developed camshaft drive chain and gear system and a metal honeycomb catalyst with an air pump start-up system are also utilized.