About 30 results
https://drivepatents.com/patents/1084499 · 1 Sep 2004
To provide a method of processing intake air pressure signals for accurately detecting the engine load including the accelerating state and the intake air flow rate from the intake air pressure. Intake air pressure signals detected with an intake air press...
https://drivepatents.com/patents/1085980 · 30 Jun 2004
Intake pressures PMi ÄmmHgÜ are detected at each crank angle position of 30 DEG Ä DEG CA (Crank Angle)Ü after an internal combustion engine 1 is started, and the intake pressures PMi are smoothed according to transition conditions thereof so as to be o...
https://drivepatents.com/patents/1086329 · 16 Jun 2004
The invention relates to a method for estimation of air charge of an engine comprising at least one cylinder (1), an air inlet (3) and an intake manifold (8), said method comprising: measuring the air flow via said air inlet (3), and measuring the pressure...
https://drivepatents.com/patents/1087333 · 6 May 2004
A correction unit corrects a previously computed amount of air passing through a throttle valve (6) based on a pressure differential between the atmospheric pressure and the previously computed intake pipe pressure when the intake pipe pressure is replaced...
https://drivepatents.com/patents/1087595 · 28 Apr 2004
The air intake flow rate fed into the cylinder is corrected to a rate required for estimating an actual air intake flow based on the amount of change in the rate fed into the cylinder at pre-determined timings. A variance in the air intake flow rate caused...
https://drivepatents.com/patents/1089822 · 4 Feb 2004
Apparatuses and methods for determining a desired charge density for an engine. A first characteristic indicative of an engine speed of the engine is determined. A second characteristic indicative of a load on the engine is determined. A value indicative o...
https://drivepatents.com/patents/1091809 · 19 Nov 2003
In an engine torque calculation method, basic engine torque TQb is calculated based on an engine rotational speed Ne and a fuel injection amount Q (step 120), and the basic engine torque TQb is corrected using a predetermined parameter (e.g., an intake air...
https://drivepatents.com/patents/1093370 · 10 Sep 2003
An engine (3) fuel inlet (1) leakage detector has an air mass sensor (2) and detects leakage from the air mass correction value calculated by the controller (9) from comparison of the mass sensor and throttle (10) setting signals.
https://drivepatents.com/patents/1093489 · 10 Sep 2003
Intake air pressure of an internal combustion engine is detected at a plurality of timings during a full stroke, a threshold pressure is set between the minimum and maximum values of detected intake air pressures, detected intake air pressures lower than t...
https://drivepatents.com/patents/1095895 · 21 May 2003
A system 12 and method for determining the charged air mass in a cylinder 14 of an internal combustion engine 10 are disclosed. The system 12 includes an electronic control unit 58 configured to determine a temperature of the combination of charged air and...