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.

Date of Patent:
Mar. 13, 2007

Filed:

Jun. 17, 2004
Applicants:

Takaaki Fukusako, Wako, JP;

Haruhiko Yamada, Wako, JP;

Tatsuro Isono, Wako, JP;

Masato Amano, Wako, JP;

Toshiaki Ichoda, Wako, JP;

Inventors:

Takaaki Fukusako, Wako, JP;

Haruhiko Yamada, Wako, JP;

Tatsuro Isono, Wako, JP;

Masato Amano, Wako, JP;

Toshiaki Ichoda, Wako, JP;

Assignee:
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
F01N 3/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

A controller for cylinder cut-off for a multi-cylinder internal combustion engine including a partially operable cylinder that can be cutoff by a cut-off cylinder mechanism provided therewith and a full operating cylinder that is not cut off, the controller for cylinder cut-off including a partially operable cylinder side catalyst temperature estimating section, a full operating cylinder side catalyst temperature estimating section, and a cylinder cut-off authorization determining section for determining whether to authorize or prohibit a cut-off of the partially operable cylinder based on a partially operable cylinder side catalyst temperature estimated by the partially operable cylinder side catalyst temperature estimating section: and a full operating cylinder side catalyst temperature estimated by the full operating cylinder side catalyst temperature estimating section.


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