The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 09, 2002
Filed:
Oct. 25, 2000
Akihito Kasai, Saitama, JP;
Yoshinori Nakagawa, Saitama, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A means for eliminating a frozen or near frozen state in a drain of the condensed water generated by the action of an exhaust gas heat exchanger is provided. The condensed water separated from the exhaust gas in a silencer ( ) is passed through a waste water trap provided with the joint ( ) and discharged to the outside. The joint ( ) also has a passage provided therein for circulating a heat transfer medium through an externally (separately) installed heat exchanger ( A). When the engine ( ) is started, it is judged, based on the temperature of the waste water trap or the water measured by a sensor ( ), whether the frozen state is present or not. When it is judged that the frozen state is present, a water pump is switched on for circulating the heat transfer medium through the waste water trap.