About 30 results
https://drivepatents.com/patents/946563 · 20 Jan 2016
A fuel injection control apparatus of a four cycle engine having three cylinders comprises: a crank angle detection device for detecting the crank angle of the four cycle engine; a first computation device for computing the quantity of fuel, which is injec...
https://drivepatents.com/patents/948349 · 7 Oct 2015
The invention relates to a method and device for determining the instantaneous mass flow of a gas, such as air in a conduit (12), like an air intake channel of an internal combustion engine of a motor vehicle. The method comprises the steps of: - measuring...
https://drivepatents.com/patents/950579 · 27 May 2015
The invention relates to a method for estimating the volumetric efficiency of an engine as a function of the temperature of air in the intake manifold and cooling fluid, with characterization of an efficiency for each of the nine pairs obtained from the ma...
https://drivepatents.com/patents/992703 · 27 Feb 2013
Provided is a system and method for calculating intake air parameters with high accuracy for an internal combustion engine that is provided with an intake air throttle. The system (1) for calculating intake air parameters includes an ECU (2). The ECU (2) c...
https://drivepatents.com/patents/995781 · 28 Nov 2012
A time-course change dM/dt in the mass M of air in an intake passage downstream of a throttle value is estimated through application of a mass conservation law to the air in the passage (Expression (14) and Step 715). A time-course change dTm/dt in the tem...
https://drivepatents.com/patents/1008527 · 19 Oct 2011
A cylinder intake air amount calculating apparatus for an internal combustion engine for calculating a cylinder intake air amount which is an amount of fresh air sucked into a cylinder of the engine, is provided. An intake air flow rate, which is a flow ra...
https://drivepatents.com/patents/1009775 · 31 Aug 2011
Disclosed is an atmospheric pressure estimation device that estimates the atmospheric pressure to be applied to the calculation of control parameters for internal combustion engines. An estimated airflow passing an intake throttle valve is calculated based...
https://drivepatents.com/patents/1012614 · 25 May 2011
The device (4) has an air guiding channel (14) passing into a measuring cross-sectional surface (7) via an outlet cross-sectional surface (13) of a flow guiding element (11), where geometry of the outlet cross-sectional surface corresponds to geometry of t...
https://drivepatents.com/patents/1015382 · 2 Mar 2011
A failure determination device for an air weight flow rate detector that maintains the calculation accuracy for an estimated air weight flow rate value to be compared with a detection value from the air weight flow rate detector, thereby allowing the failu...
https://drivepatents.com/patents/1015895 · 9 Feb 2011
To provide an internal combustion engine control apparatus which is capable of obtaining an accurate air flow rate by using a thermal air flow rate detecting apparatus (2) at the time when pulsation is caused. The internal combustion engine control apparat...