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Title:
FREE-PISTON GENERATOR
Document Type and Number:
WIPO Patent Application WO/2012/133242
Kind Code:
A1
Abstract:
A free-piston generator (10) for generating electricity with the linear reciprocal motion of a piston (20) is provided with a combustion chamber (26) and a spring portion (28) disposed on mutually opposite sides of the piston (20) and comprises: an engine unit (16) in which the piston (20) reciprocally moves by the combustion pressure generated upon combustion of a fuel in the combustion chamber (26) and the restoring force of the spring portion compressed by the piston (20); an electricity generation unit (14) for generating electricity with the reciprocal motion of the piston (20); and a control means (50) for controlling the drives of the engine unit (16) and the electricity generation unit (14). The control means adjusts the balance between a fuel injection amount injected into the combustion chamber and a generation load, the repulsion force of the spring portion (28), an intake air amount into the combustion chamber (26), and so on, thereby adjusting the motion frequency of the piston (20) or the compression ratio during combustion.

Inventors:
HOTTA, Yoshihiro (41-1 Yokomichi, Nagakute-sh, Aichi 92, 〒4801192, JP)
堀田 義博 (〒92 愛知県長久手市横道41番地の1 株式会社豊田中央研究所内 Aichi, 〒4801192, JP)
KOSAKA, Hidemasa (41-1 Yokomichi, Nagakute-sh, Aichi 92, 〒4801192, JP)
小坂 英雅 (〒92 愛知県長久手市横道41番地の1 株式会社豊田中央研究所内 Aichi, 〒4801192, JP)
NAKAKITA, Kiyomi (41-1 Yokomichi, Nagakute-sh, Aichi 92, 〒4801192, JP)
中北 清己 (〒92 愛知県長久手市横道41番地の1 株式会社豊田中央研究所内 Aichi, 〒4801192, JP)
Application Number:
JP2012/057629
Publication Date:
October 04, 2012
Filing Date:
March 23, 2012
Export Citation:
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Assignee:
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO (41-1, Yokomichi Nagakute-sh, Aichi 92, 〒4801192, JP)
株式会社豊田中央研究所 (〒92 愛知県長久手市横道41番地の1 Aichi, 〒4801192, JP)
HOTTA, Yoshihiro (41-1 Yokomichi, Nagakute-sh, Aichi 92, 〒4801192, JP)
堀田 義博 (〒92 愛知県長久手市横道41番地の1 株式会社豊田中央研究所内 Aichi, 〒4801192, JP)
KOSAKA, Hidemasa (41-1 Yokomichi, Nagakute-sh, Aichi 92, 〒4801192, JP)
小坂 英雅 (〒92 愛知県長久手市横道41番地の1 株式会社豊田中央研究所内 Aichi, 〒4801192, JP)
NAKAKITA, Kiyomi (41-1 Yokomichi, Nagakute-sh, Aichi 92, 〒4801192, JP)
International Classes:
F02B71/04; F01B11/04; H02P9/04
Foreign References:
JPH10501039A
JP2005524016A
JP2010173630A
JP2009216100A
JP2006170071A
JP2010523883A
Attorney, Agent or Firm:
YKI Patent Attorneys (1-34-12, Kichijoji-Honcho Musashino-sh, Tokyo 04, 〒1800004, JP)
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