About 30 results
https://drivepatents.com/patents/1066664 · 7 Jun 2006
An intake manifold (34) of an engine (14) has a common pipe (38) disposed downstream of a throttle valve (42), a plurality of first through fourth branch pipes (36a through 36d) connected to the common pipe (38), and a bypass pipe (60) connected between th...
https://drivepatents.com/patents/1067111 · 31 May 2006
A control system of an internal combustion engine provided with a throttle valve passage air flow calculation equation by which the throttle valve passage air flow mt is expressed as a function of the downstream side intake pipe pressure at the downstream ...
https://drivepatents.com/patents/1066964 · 31 May 2006
An air quantity estimation apparatus for an internal combustion engine estimates intake pipe section pressure, which is pressure of air within an intake pipe section. When throttle valve opening is smaller than a threshold value, the apparatus estimates th...
https://drivepatents.com/patents/1067186 · 24 May 2006
An amount-of-air detecting time period Ti is preset based on an intake time period Tr during which intake air is actually drawn into a cylinder chamber. An intake air amount average value Qa during a time period, other than the time period Ti, between inta...
https://drivepatents.com/patents/1068411 · 12 Apr 2006
In a device for estimating an amount of intake air of an internal combustion engine, wherein an amount of intake air passing through the throttle valve is calculated by using of an upstream side intake air pressure upstream of the throttle valve and a down...
https://drivepatents.com/patents/1070807 · 18 Jan 2006
An air intake apparatus for an internal combustion engine includes an air intake manifold (6) that has a plurality of branch pipes (7) that are connected to an internal combustion engine and has a collecting pipe (8) to which a throttle body (10) is connec...
https://drivepatents.com/patents/1072737 · 9 Nov 2005
Calculation models (22, 24) for an in-cylinder air charge amount determine an estimated intake air pressure (Pe) based on an intake air flow rate (Ms), and then determine an air charge amount (Mc) from the estimated intake air pressure (Pe). A correction e...
https://drivepatents.com/patents/1073084 · 26 Oct 2005
An intake parameter estimating device is provided for estimating a tuning frequency (NEK) of an internal combustion engine, which in turn can be used to estimate an intake air pressure of the internal combustion engine. The intake parameter estimating devi...
https://drivepatents.com/patents/1075924 · 13 Jul 2005
The invention relates to an intake-air measuring apparatus for an internal combustion engine, enabling to calculate a mass of intake-air inducted into the internal combustion engine, with a small map but at high accuracy, comprises: a means (11) for measur...
https://drivepatents.com/patents/1081594 · 15 Dec 2004
A signal conditioning device (1), in particular for probes (3) for measuring air flow rate in internal combustion engines, comprising means (2) for translating and/or amplifying a signal outputted by the measuring probe (3), before it reaches a unit (4) fo...