About 21 results
https://drivepatents.com/patents/1015390 · 2 Mar 2011
Increase in combustion noise and deterioration of exhaust gas performance caused by inter-cylinder correction are prevented, and decrease in temperature rise performance of a diesel particulate removal device caused by inter-cylinder correction is prevente...
https://drivepatents.com/patents/1015693 · 16 Feb 2011
The present invention performs correction appropriately according to errors in the fuel system and air system respectively and corrects both variations in the air-fuel ratio and torque. When the difference between a target air-fuel ratio and a real air-fue...
https://drivepatents.com/patents/1078260 · 27 Apr 2005
A description is provided of a method for balancing the torque generated by the cylinders (4) of an internal combustion engine (1), comprising the stages of: determining for each cylinder (4) quantity (CB4) which indicates the torque generated by the cylin...
https://drivepatents.com/patents/1085303 · 28 Jul 2004
Learning control is carried out to learn and correct degradation in the functionality of a fuel supply pump (3) having a solenoid coil (6) for an engine. During the learning control, a temporary present learned value (ITL) to be utilized in the calculation...
https://drivepatents.com/patents/1086754 · 2 Jun 2004
An air-fuel ratio control system for an internal combustion engine is provided which is capable of appropriately and promptly correcting variation in the air-fuel ratio of a mixture between cylinders and realizing a very robust air-fuel ratio control, even...
https://drivepatents.com/patents/1090735 · 2 Jan 2004
An injection quantity control system for an internal combustion engine (1) stores a value Qb, which is a sum of an FCCB correction value and an ISC correction value corresponding to an injection frequency of K times per combustion in multi-injection in an ...
https://drivepatents.com/patents/1091810 · 19 Nov 2003
An accurate method of determining the power developed by selected cylinders of a multiple cylinder engine is based on the concept of controlling engine rpm for test purposes by adjusting the load on the engine instead of controlling speed by adjusting the ...
https://drivepatents.com/patents/1093519 · 3 Sep 2003
A fuel injection is carried out as n split injections. Each of injection quantities is defined by dividing an injection quantity into n fuel injections. A FCCB correction and an ISC correction are carried out while n split injection cycles are performed. A...
https://drivepatents.com/patents/1098102 · 26 Feb 2003
When the valve adopts the injection position for a short interval (at least), in addition to the control interval (T), other characteristics of the control current profile (i(t)) are varied. An Independent claim is included for corresponding equipment.
https://drivepatents.com/patents/1109862 · 26 Sep 2001
An improved individual cylinder fuel control method based on sampled readings of a single oxygen sensor responsive to the combined exhaust gas flow of several engine cylinders. A model-based observer is used to reproduce the imbalances of the different cyl...