Title:
DEVICE FOR DETECTING REMAINING QUANTITY OF HYDROGEN
Document Type and Number:
Japanese Patent JP3147968
Kind Code:
B2
Abstract:
PURPOSE: To prevent unexpected fuel lack or the like by detecting the remaining quantity of hydrogen in a metal-hydride tank over the whole range of 0 to 100%.
CONSTITUTION: With the use of a nature of metal hydride(MH) such that the lattice of crystal expands so as to increase the bulk of MH as MH stores hydrogen, the bulk of MH is detected so as to estimate the remaining quantity of hydrogen. For example, with the use of electrostatic capacitance type level sensor 4 having electrode plates whose front ends are embedded in granular metal hydride, the electrostatic capacitance which varies in accordance with a quantity of hydrogen existing between two electrodes 4a, 4b having their surfaces coated with an insulation film, is detected by a detecting circuit 5, and is then converted into a remaining hydrogen quantity by a computing circuit 6. Then the quantity is delivered to a display part 7.
Inventors:
Kenji Kanehara
Toshihiko Inogashira
Jun Yamada
Osamu Kito
Toshihiko Inogashira
Jun Yamada
Osamu Kito
Application Number:
JP2272592A
Publication Date:
March 19, 2001
Filing Date:
February 07, 1992
Export Citation:
Assignee:
Japan Auto Parts Research Institute, Inc.
TOYOTA JIDOSHA KABUSHIKI KAISHA
TOYOTA JIDOSHA KABUSHIKI KAISHA
International Classes:
F02M21/02; F17C11/00; F17C13/02; (IPC1-7): F02M21/02
Domestic Patent References:
| JP5766357A | ||||
| JP1307636A | ||||
| JP2118417A |
Attorney, Agent or Firm:
Aoki Akira (4 outside)