About 86 results
https://drivepatents.com/patents/977031 · 26 Mar 2014
A plurality of cylinders are provided. An in-cylinder pressure sensor is mounted on each of the plurality of cylinders. A combustion parameter (e.g., the amount of generated heat) is calculated from the output of the in-cylinder pressure sensor. The air-fu...
https://drivepatents.com/patents/977782 · 5 Mar 2014
An object of this invention is to accurately detect a sensitivity abnormality of an in-cylinder pressure sensor over a wide operating range without using other sensor outputs or the like. Based on only the output of an in-cylinder pressure sensor 44, an EC...
https://drivepatents.com/patents/978966 · 5 Feb 2014
A cylinder internal-pressure sensor is provided with a housing unit 2 composed of an outer cylinder portion 2e and an inner cylinder portion 2i having elastic portions 2es and 2is having elasticity in an axial direction Fs formed on an intermediate portion...
https://drivepatents.com/patents/981059 · 11 Dec 2013
An object of this invention is to provide a control apparatus for an internal combustion engine which makes it possible to reliably avoid an abnormal increase in in-cylinder pressure due to pre-ignition. The control apparatus of this invention controls an ...
https://drivepatents.com/patents/981349 · 4 Dec 2013
In a compression ignition internal combustion engine 20 that generates electromagnetic wave plasma by emitting electromagnetic waves to a combustion chamber 21 during a period of a preceding injection, a condition of combustion of fuel from a main injectio...
https://drivepatents.com/patents/990894 · 15 May 2013
A control apparatus for an internal combustion engine is provided that can correct a shift in an output value of an in-cylinder pressure sensor that occurs for a predetermined time period after occurrence of abnormal combustion. Solution A pre-occurrence o...
https://drivepatents.com/patents/994407 · 2 Jan 2013
A reference heat production efficiency and an actual heat production efficiency are compared. When the actual heat production efficiency is lower than the reference heat production efficiency, and its deviation amount is equal to or more than a predetermin...
https://drivepatents.com/patents/994715 · 26 Dec 2012
The cylinder pressure estimation device of the invention is applied to an engine which has a cylinder pressure sensor 63 and comprises means for calculating as candidate values of an intake-valve-closing-time cylinder pressure, a plurality of candidate val...
https://drivepatents.com/patents/995045 · 19 Dec 2012
The invention provides a combustion control device applied to an internal combustion engine having a glow plug 23, the glow plug 23 heating a gas in a cylinder, the combustion control device comprising: a compression end temperature estimating means for es...
https://drivepatents.com/patents/999845 · 1 Aug 2012
An object of this invention is to promptly detect a crank angle based on in-cylinder pressures and easily compensate for a detection error by processing that has a low computational load. An ECU 50 calculates an in-cylinder pressure ratio (P n+1 /P n ) bas...