| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 123568220 | Ambient condition responsive (e.g., atmospheric temperature, atmospheric pressure) | 8 |
| 20090266345 | INTERNAL COMBUSTION ENGINE CONTROL DEVICE AND INTERNAL COMBUSTION ENGINE CONTROL SYSTEM - An internal combustion engine control device and an internal combustion engine control system are disclosed as applied to an internal combustion engine having external EGR regulating device for regulating an external EGR amount in which a part of exhaust gases is recirculated from an exhaust gas passage to an air-intake passage, an internal EGR regulating device for regulating an internal EGR amount in which a part of combusted gases remains in a cylinder. External and internal EGR ratio control means controls operations of the external EGR regulating device and the internal EGR regulating device to variably control a ratio between the external EGR amount and the internal EGR amount depending on a surrounding atmospheric pressure. | 10-29-2009 |
| 20100031939 | EXHAUST GAS RECIRCULATION APPARATUS FOR AN INTERNAL COMBUSTION ENGINE - In an exhaust gas recirculation apparatus for an internal combustion engine ( | 02-11-2010 |
| 20120012088 | APPARATUS AND METHOD FOR CONTROL LOW PRESSURE EXHAUST GAS RECIRCULATION SYSTEM - A low pressure EGR (Exhaust Gas Recirculation) system control apparatus of an internal combustion engine of a vehicle may include an atmosphere temperature detecting portion that detects atmosphere temperature of a driving region of the vehicle, an air conditioner switch that outputs ON/OFF signal of an air conditioner, a wiper switch outputting ON/OFF signal of a wiper, a control portion that uses the atmosphere temperature to determine a relative humidity and limits an operation of a low pressure EGR system such that condensate may be not formed therein, when the relative humidity may be higher than a predetermined humidity value. | 01-19-2012 |
| 20120024271 | METHOD FOR MANAGING THE RELATIVE HUMIDITY IN THE AIR PATH OF AN INTERNAL COMBUSTION ENGINE EQUIPPED WITH A LOW PRESSURE EGR SYSTEM - A method is provided for estimating the relative humidity in an intake line of an internal combustion engine provided with an intake manifold connected to the intake line, an exhaust line, and a Low Pressure EGR (LPE) conduit which fluidly connects the exhaust line to a connecting point of said intake line. The method includes, but is not limited to calculating specific humidity in the exhaust line, as a function of the O | 02-02-2012 |
| 20120097139 | APPARATUS FOR ESTIMATING EXHAUST GAS RECIRCULATION QUANTITY - An apparatus estimates a quantity of recirculated exhaust gas. The apparatus includes a first unit computing a total quantity of gas, a second unit computing a quantity of exhaust gas passing through an EGR vale by means of an EGR valve model, a third unit computing a temporal quantity of the exhaust gas by means of an EGR diffusion model which simulates a behavior of the exhaust gas, a fourth unit obtaining an intake air quantity by subtracting the temporal exhaust gas quantity from the total gas quantity, a fifth unit correcting the computed intake air quantity by means of intake air quantity measured by the airflow meter, a sixth unit computing an intake air pressure based on the corrected quantity of the intake air, and a seventh unit computing a quantity of the recirculated exhaust gas based on at least the intake air pressure. | 04-26-2012 |
| 20140202437 | METHODS AND SYSTEMS FOR HUMIDITY AND PCV FLOW DETECTION VIA AN EXHAUST GAS SENSOR - Methods and systems are provided for estimating a PCV flow to an engine based on the output of an exhaust gas oxygen sensor. During DFSO conditions, a reference voltage of the sensor is modulated initially with an intake throttle open and then with the intake throttle closed. PCV flow leaking past the piston valves in an aging engine, as well as an ambient humidity estimate, are inferred based on the outputs of the sensor during the modulating with the intake throttle open and closed. | 07-24-2014 |
| 20140338644 | AUTOMOTIVE VIRTUAL HUMIDITY SENSOR - Systems and methods are provided for adjusting an engine powertrain component responsive to ambient humidity, the ambient humidity based on vehicle position in a region, clock time ambient temperature, and historical humidity data for that region for a current time of year. This may be accomplished without relying on a costly, and often, temperamental physical humidity sensor. Training modules and cloud updates may further increase the accuracy of the virtual humidity sensor of the present disclosure. | 11-20-2014 |
| 20150337749 | METHODS AND SYSTEMS FOR HUMIDITY AND PCV FLOW DETECTION VIA AN EXHAUST GAS SENSOR - Methods and systems are provided for estimating a PCV flow to an engine based on the output of an exhaust gas oxygen sensor. During DFSO conditions, a reference voltage of the sensor is modulated initially with an intake throttle open and then with the intake throttle closed. PCV flow leaking past the piston valves in an aging engine, as well as an ambient humidity estimate, are inferred based on the outputs of the sensor during the modulating with the intake throttle open and closed. | 11-26-2015 |
