Keeping up with new technology and constantly bringing it to the next level, Yamaha Motor India is set to introduce forged piston which enables lighter piston design and excellent power development, in the Indian market. The forged piston is used on the new 150cc YZF-R15, which was unveiled at Auto Expo 2008, as the first on an Indian market model and a feature that reduces the reciprocating mass of the piston by approximately 20%.
Introduced in 1997, Yamaha “controlled forging technology” has been used successfully for over a decade for the mass production of forged aluminum pistons because it utilizes a system of precise control of the piece temperature, mold temperature and the forging force. Yamaha’s controlled forging technology tightly controls the forging conditions, including (1) the initial heating of the work piece, (2) controlling the temperature of the mold so that it keeps the work piece in the ideal 400 to 500 ℃ range (3) applying just the right amount of pressure to the mold in the forging process and many more factors.
