About 11 results
https://drivepatents.com/patents/1379334 · 12 Mar 2026
The oxygen storage amount of a three-way catalyst is estimated based on an upstream-side exhaust air-fuel ratio, and a target air-fuel ratio is controlled such that the estimated oxygen storage amount matches a predetermined target oxygen storage amount. W...
https://drivepatents.com/patents/1386897 · 5 Nov 2025
A fuel shortage detection device for an internal combustion engine capable of detecting fuel shortage based on the air-fuel ratio of the exhaust gas. The fuel shortage detection device for an internal combustion engine includes: an air-fuel ratio determina...
https://drivepatents.com/patents/944806 · 13 Apr 2016
A sensor element 10 of an A/F sensor AS has a solid electrolyte layer 11, a first electrode 15 arranged on one side of the solid electrolyte layer 11 so as to be exposed to the exhaust gas of an internal combustion engine, and a second electrode 16 arrange...
https://drivepatents.com/patents/955161 · 23 Dec 2015
A sensor for detecting oxygen concentration in exhaust gas or an air-fuel ratio provided with a solid electrolyte body, an exhaust gas side electrode being disposed on one side of the solid electrolyte body and being in contact with the exhaust gas, an atm...
https://drivepatents.com/patents/967992 · 29 Oct 2014
A fuel injection controller includes an oxygen sensor (33) for responding to an oxygen concentration inside an exhaust passage (43), and an injection amount control unit (50) programmed to control a fuel injection amount based on the output of the oxygen s...
https://drivepatents.com/patents/977300 · 19 Mar 2014
The invention relates to a control device of an engine, comprising fuel supplying means (21), target fuel supply amount setting means, fuel supply command value providing means, supplied air amount detection means (71), air-fuel ratio detection means (76U)...
https://drivepatents.com/patents/996421 · 31 Oct 2012
[Objective] An object is to provide a gas sensor apparatus which can start deterioration determination for a cell at an early timing and can perform the deterioration determination for the cell accurately, and a method of controlling the gas sensor apparat...
https://drivepatents.com/patents/1002475 · 9 May 2012
An object of the present invention is to provide a control system of an internal combustion engine 1 capable of, in a case where fuel is injected from an injector for a plurality of times in a divided manner based on an operation status of the internal com...
https://drivepatents.com/patents/1079292 · 16 Mar 2005
A deterioration failure diagnostic apparatus is provided for diagnosing an exhaust gas sensor disposed in an exhaust passage of an engine. The apparatus has a unit for generating a detecting signal and multiplying the generated signal to a first basic fuel...
https://drivepatents.com/patents/1082851 · 27 Oct 2004
A controller comprises an impedance detection unit for applying an impedance detection voltage to the sensor and detect device impedance; and reverse voltage application unit for applying the same voltage as generated by the sensor itself or a voltage that...