About 17 results
https://drivepatents.com/patents/943009 · 18 May 2016
An abnormality diagnosis system of an air-fuel ratio sensor 40 or 41 provided in an exhaust passage of an internal combustion engine and generating a limit current corresponding to an air-fuel ratio, comprises a current detecting part 61 detecting an outpu...
https://drivepatents.com/patents/955251 · 9 Dec 2015
This control device for an internal combustion engine includes: an exhaust purification catalyst (20) that is provided in an exhaust passage of the internal combustion engine; a downstream air-fuel ratio sensor (41) that is provided downstream of the exhau...
https://drivepatents.com/patents/962428 · 18 Mar 2015
A control device for a high-pressure fuel pump for an internal combustion engine; the high pressure fuel pump is comprised of: a pressurizing member being reciprocated by rotation of a pump driving cam mounted on the internal combustion engine; a pressuriz...
https://drivepatents.com/patents/963073 · 18 Feb 2015
A flow rate controller of an internal combustion engine includes a flow rate change section configured by including an EGR valve (43), a bypass valve (45), and a diesel throttle (13), as the flow rate change section capable of changing at least one of a fl...
https://drivepatents.com/patents/965900 · 24 Dec 2014
A control device for an exhaust gas sensor includes first means for estimating a temperature of a sensor element in accordance with impedance of a solid electrolyte, and second means for estimating the temperature of the sensor element in accordance with r...
https://drivepatents.com/patents/971626 · 6 Aug 2014
In a fuel injection control system for an internal combustion engine provided with a low pressure fuel pump (1) and a high pressure fuel pump (2), a feed pressure is made as low as possible, while suppressing generation of vapor. Proportional plus integral...
https://drivepatents.com/patents/979221 · 29 Jan 2014
According to a method and an apparatus (14) of the present invention for diagnosing a fault of an engine (16), a cranking rotation state is created by rotating a crank shaft (24) while explosions in each cylinder (22) are stopped; a variation (Ӄ) of an...
https://drivepatents.com/patents/998330 · 12 Sep 2012
In an oxygen sensor control apparatus, after start of fuel cut, the weighted average Ipd of corrected values obtained by multiplying the output value of a mounted oxygen sensor by a correction coefficient Kp is obtained as a representative value Ipe, repre...
https://drivepatents.com/patents/1010105 · 17 Aug 2011
An EG-ECU suspends fuel cutoff when the fuel cutoff is being carried out and the engine speed NE becomes lower than or equal to the resumption engine speed NErtn. The EG-ECU forcibly opens and closes an EGR valve when the fuel cutoff is being carried out, ...
https://drivepatents.com/patents/1011617 · 22 Jun 2011
The method involves determining the time gradient of the sensor signal which characterizes the oxygen concentration. The time gradient is determined during a transition of a combustion engine (110) from an operational phase into a selected operational phas...