| Detroit Diesel Corporation Patent applications |
| Patent application number | Title | Published |
|---|
| 20120124966 | METHOD OF DIESEL PARTICULATE FILTER (DPF) TO CALCULATE ACTUAL SOOT LOAD AND ASH LOAD OF THE FILTER - A method to operate an internal combustion engine with a diesel particulate filter to extend the life of the diesel particulate filter by initiating active regeneration of the diesel particulate filter when the soot load of the filter exceeds a predetermined actual soot load value. | 05-24-2012 |
| 20120107138 | METHOD TO OPERATE AN ELECTRONICALLY CONTROLLED AIR COMPRESSOR POWERED BY AN INTERNAL COMBUSTION ENGINE - A method to operate an electronically controlled air compressor powered by an internal combustion engine, wherein the air compressor is selectively activated when the air compressor minimum threshold value differs from the air compressor minimum threshold hysteresis by a predetermined value, and is deactivated when the air compressor maximum threshold value and the air compressor maximum threshold value hysteresis value differ by a predetermined value. | 05-03-2012 |
| 20120041637 | ENGINE DIAGNOSTIC SYSTEM AND METHOD FOR CAPTURING DIAGNOSTIC DATA IN REAL-TIME - A diagnostic system for a vehicle that provides vehicle operational data during a fault code occurrence is disclosed. The diagnostic system includes an onboard diagnostics system and an engine control module. The onboard diagnostics system is configured for generating vehicle diagnostics codes when the vehicle operates outside predetermined operating parameters. The engine control module is operatively configured to monitor vehicle operational data for a plurality of vehicle subsystems. The onboard diagnostic system is configured to wirelessly transmit a vehicle diagnostic code when the vehicle operates outside of the predetermined operating parameters to a remote data storage location. The vehicle operational data is configured to be wirelessly transmitted from the engine control module to the remote data storage location. | 02-16-2012 |
| 20110138804 | METHOD FOR OPERATING AN ENGINE TO ADJUST TURBOCHARGER PERFORMANCE CHARACTERISTICS - A method to operate an electronically controlled internal combustion engine having an electronic central unit with memory a turbocharger and exhaust gas recirculation valve to determine performance characteristics of said variable geometric turbocharger. | 06-16-2011 |
| 20110106505 | METHOD FOR ESTIMATING AMBIENT AIR TEMPERATURE PRIOR TO COMBUSTION IN AN INTERNAL COMBUSTION ENGINE - A method to estimate ambient air temperature in the vicinity of a vehicle equipped with an internal combustion engine equipped with at least an electronic control unit (ECU) with memory and a temperature sensor. | 05-05-2011 |
| 20110023845 | METHOD OF DIAGNOSING A SLOW EGR SYSTEM IN AN INTERNAL COMBUSTION ENGINE - A method for diagnosing slow EGR response in an internal combustion engine equipped with an electronic controller with memory, comprising:
| 02-03-2011 |
| 20100050757 | METHOD AND SYSTEM TO DETERMINE THE EFFICIENCY OF A DIESEL OXIDATION CATALYST - A method for determining the efficiency of a diesel oxidation catalyst (DOC) having an inlet and an outlet for the flow of an exhaust gas stream in an exhaust system used in conjunction with an electronic controlled internal combustion engine equipped with an Electronic Control Unit (ECU) having memory, comprising: | 03-04-2010 |
| 20090277158 | METHOD OF CONTROLLING HYDROCARBON ACCUMULATION IN A PARTICULATE FILTER UNDER CERTAIN OPERATING CONDITIONS - One embodiment of the invention includes a method of operating an internal combustion engine system comprising an engine, an oxidation catalyst, and a particulate filter, the method comprising: determining if the outlet temperature of exhaust gas from the oxidation catalyst is below a first temperature, measuring the time that the outlet temperature of exhaust gas from the oxidation catalyst is below the first temperature, determining if the measured time has exceeded a first time period, and if so, elevating the temperature of the exhaust gas exiting the oxidation catalyst. | 11-12-2009 |
| 20090217645 | METHOD OF OPERATING AN INTERNAL COMBUSTION ENGINE TO HEAT UP A SELECTIVE CATALYST REDUCER - In one embodiment, the present invention relates to a method to operate an internal combustion engine equipped with an Electronic Control Unit (ECU) with memory, an exhaust system including a Diesel Oxidation Catalyst (DOC), a Diesel Particulate Filter (DPF), upstream of a Selective Catalyst Reducer (SCR). A doser is in the DPF and actuated by commands from the ECU. The method includes sensors at the DPF and SCR electronically connected to the ECU to transmit data signals indicative of operating conditions at the DPF and SCR. The method includes sensing the temperature at an outlet of the DPF and an inlet at the SCR determining whether that temperature is at least a predetermined temperature for a predetermined period of time, and introducing heat to the SCR to raise its temperature to a predetermined level for a predetermined period of time, such as light off temperature, to operate more efficiently. Heat may be introduced in the exhaust stream by engine thermal management strategies as well. | 09-03-2009 |
| 20090199537 | METHODS TO PROTECT SELECTIVE CATALYST REDUCER AFTERTREATMENT DEVICES DURING UNCONTROLLED DIESEL PARTICULATE FILTER REGENERATION - The present invention is directed to a method to operate an electronically controlled internal combustion engine with an exhaust system equipped with a diesel particulate filter upstream of a selective catalyst reducer to protect the selective catalyst reducer from premature aging and failure caused by exhaust temperature heat generated during uncontrolled regeneration of the diesel particulate filter. | 08-13-2009 |
| 20090188481 | SQUISH-INDUCED MIXING-INTENSIFIED LOW EMISSIONS COMBUSTION PISTON FOR INTERNAL COMBUSTION ENGINES - A low geometric squish ratio piston for internal combustion engines to facilitate squish inducing mixing and intensified turbulence near engine top dead center The piston comprises a piston head having a height and a width and a depth with a top surface, and a skirt region with a ring region to define a body. The top surface defines an outer radius and is equipped with a combustion bowl recessed in the top surface and concentric therein to define an inner radius. The outer radius and the inner radius define a low geometric squish ratio. The combustion bowl has a deep piston center depth and a relatively high re-entrant angle at a periphery of the combustion bowl radius. | 07-30-2009 |
| 20090165544 | System and Method for Determining Non-Sensed Vehicle Operating Parameters - A method and system is provided for determining non-sensed vehicle operating parameters of a vehicle system. The method and system further provide for determining an engine air mass flow rate using the non-sensed vehicle operating parameters. A plurality of vehicle operating set-points may be determined using the non-sensed vehicle system operating parameters and the non-sensed engine air mass flow rate. A controller may use the vehicle operating set-points in order to control emissions of the vehicle system. | 07-02-2009 |
| 20090158707 | ENGINE AFTER-TREATMENT CONTROLS USING DOSING BELOW CATALYST LIGHT-OFF TEMPERATURE - A method of controlling dosing of a hydrocarbon fuel into the exhaust gas of a combustion engine upstream of a particulate filter when the exhaust gas temperature into an oxidation catalyst upstream of a particulate filter has dropped below the light-off temperature of the catalyst. | 06-25-2009 |
| 20090158706 | VARIABLE ENGINE OUT EMISSION CONTROL ROADMAP - A method for operating an internal combustion engine for variable engine out NOx control talking into account the age of the SCR. | 06-25-2009 |
| 20090151354 | VARIABLE GEOMETRY TURBOCHARGER EXTENDER IDLE VANE CYCLE - A method to operate and electronic controlled internal combustion engine, and particularly a heavy duty diesel engine, to effect vane cleaning of a variable geometry turbocharger. | 06-18-2009 |
| 20090151351 | METHOD FOR DETERMINING NECESSITY OF MULTIPLE VANE CLEANING PROCEDURES - A method of operating an internal combustion engine with a variable geometry turbocharger whereby the turbocharger is cleaned of accumulated soot on a time based periodic basis. | 06-18-2009 |
| 20090138171 | METHOD FOR ANTI-ALIAS DUAL PROCESSING LOOP DATA ACQUISITION IN AN INTERNAL COMBUSTION ENGINE - A method to operate an electronic controlled internal combustion engine with an electronic controller having memory and tables resident therein to obtain and use sensor data beyond the Nyquist threshold. | 05-28-2009 |
| 20090126193 | METHOD OF REFURBISHING A DIESEL INJECTOR VALVE SEAT - A method to refurbish a valve seat in a fuel injector module housing where the valve seat is of a larger diameter than an associate valve guide bore user using an indexable insert insertable into the bore and oriented in a manner to engage the valve seat to facilitate refurbishing. | 05-21-2009 |
| 20090113707 | METHOD FOR REFURBISHING A VALVE SEAT IN A FUEL INJECTOR ASSEMBLY - A method of refurbishing a fuel injector body valve seat. The method includes removing a poppet valve from the valve bore guide, machining the bore and valve seat to remove cavitation, machining to create an undercut a the stress riser, nitriding the valve bore guide and radiusing fuel passage to a sufficient depth to restore hardness thereto. | 05-07-2009 |
| 20090076716 | CHARACTERISTIC NUMBER METHOD FOR ENGINE REAL-TIME DIAGNOSTICS APPLICATION - A method of internal combustion engine operation that include real time engine diagnostics to detect hardware malfunctions that combines the signals for two or more sensors to detect the severity of a hardware malfunction. | 03-19-2009 |
| 20090076715 | INTAKE CHARGE DEFICIT METHOD FOR ENGINE REAL-TIME DIAGNOSTICS APPLICATION - The present invention relates to a method of engine operation to provide a real time engine diagnostic to detect EGR, turbocharger or compressor malfunctions and to prevent such malfunctions from damaging the engine. | 03-19-2009 |
| 20090037047 | METHOD AND SYSTEM FOR CONTROLLING A VEHICLE POWERTRAIN BASED UPON ACTUAL VEHICLE LOAD - A method and system for controlling an engine controller in response to actual vehicle load. | 02-05-2009 |
| 20080314021 | METHOD TO RE-OPEN ASH FILLED CHANNELS IN DIESEL PARTICULATE FILTERS - A method for determining a time duration and an amount of fuel to include within exhaust gases to facilitate sintering of ash within a diesel particulate filter to reopen ash filled channels in said diesel particulate filter. | 12-25-2008 |
