ENGINE LIFE PREDICATION APPARATUS AND REFRIGERATOR

Title:

ENGINE LIFE PREDICATION APPARATUS AND REFRIGERATOR

Document Type and Number:

WIPO Patent Application WO/2008/065848

Kind Code:

A1

Abstract:

An engine life prediction apparatus produced at a low cost and having a high reliability is provided. A current detecting section (41) and a voltage detecting section (42) detect the value of a current and the value of a voltage which are outputted by an engine generator (1), respectively. An arithmetic section (5) determines a weight constant from the current value and the voltage value, assigns the weight to the operating time of an engine (11) by using the weight constant, and integrates the weighted operating time to calculate the integrated time. A judgment section (6) compares the integrated time with a reference time and, when judging that the integrated time exceeds the reference time, notifies it to a report section (8). The report section (8) having received the notification reports it to the outside. The current detecting section (41) and the voltage detecting section (42) can be configured by an electrical circuit. Thus, the engine life can be predicted at the low cost and with the high reliability.

Inventors:

MATSUNO SUMIKAZU (JP)
NAKATA TETSUO (JP)

Application Number:

PCT/JP2007/071316

Publication Date:

June 05, 2008

Filing Date:

November 01, 2007

Export Citation:

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Assignee:

DAIKIN IND LTD (JP)
MATSUNO SUMIKAZU (JP)
NAKATA TETSUO (JP)

International Classes:

G01M15/02; G01M99/00; G01R31/34; H02K15/00

Foreign References:

JP2001011900A	2001-01-16
JP2000037095A	2000-02-02
JP2005137127A	2005-05-26
JP2004108722A	2004-04-08
JPH11211622A	1999-08-06
JPH0610748A	1994-01-18
JP2001011900A	2001-01-16
JP2005171940A	2005-06-30

Other References: