The patents may generally be divided into four categories.
The first category, Core DSF, covers primarily determining the density and sequence of combustion events. The second category, Vehicle Integration, covers primarily the impact on other vehicle systems of DSF operation and vice versa. The third category, Alternative Engines, covers primarily engines using a working cycle other than an Otto cycle, and powertrains with auxiliary power sources. This category includes Diesel engines, hybrid powertrains, and engines with
multiple firing levels. The fourth category, Diagnostics, covers primarily systems and methods for determining faults, generally those related to DSF operation.
This web page is provided to address the virtual patent marking provisions of various jurisdictions. Additional patents are pending, both in the United States, China, Germany, Japan, South Korea, India, Europe, and Brazil.
Core DSF
|
Patent Titles |
Patent Number |
| internal combustion engine control for improved efficiency | US7577511 |
| internal combustion engine control for improved efficiency | US7849835 |
| internal combustion engine control for improved efficiency | US7886715 |
| internal combustion engine control for improved efficiency | US7954474 |
| internal combustion engine control for improved efficiency | US8099224 |
| internal combustion engine control for improved efficiency | US8131445 |
| internal combustion engine control for improved efficiency | US8131447 |
| internal combustion engine control for improved efficiency | US8336521 |
| skip fire engine control | US8499743 |
| internal combustion engine control for improved efficiency | US8616181 |
| internal combustion engine control for improved efficiency | US8701628 |
| control of a partial cylinder deactivation engine | US8839766 |
| skip fire internal combustion engine control | US8869773 |
| skip fire internal combustion engine control | US9020735 |
| firing fraction management in skip fire engine control | US9086020 |
| managing engine firing patterns and pattern transitions during skip fire engine operation | US9200575 |
| look-up table based skip fire engine control | US9200587 |
| split bank and multimode skip fire operation | US9239037 |
| Cylinder firing fraction determination and control systems and methods | US9441550 |
| firing fraction management in skip fire engine control | US9528446 |
| firing fraction management in skip fire engine control | US9650971 |
| method and apparatus for determining optimum skip fire firing profile with adjustments for ambient temperature | US9739212 |
| skip fire transition control | US9745905 |
| skip fire transition control | US9777658 |
| firing fraction management in skip fire engine control | US9964051 |
| internal combustion engine control for improved efficiency | JP5395899 |
| internal combustion engine control for improved efficiency | DE112011100224B4 |
| internal combustion engine control for improved efficiency | CN102089511B |
| internal combustion engine control for improved efficiency | CN102713215B |
| internal combustion engine control for improved efficiency | KR101578338 |
| firing fraction management in skip fire engine control | JP6041363 |
| control of a partial cylinder deactivation engine | CN104204473B |
| firing fraction management in skip fire engine control | CN103890351B |
| managing engine firing patterns and pattern transitions duringskip fire engine operation | DE112014001434B4 |
| firing fraction management in skip fire engine control | JP6255018 |
| Cylinder firing fraction determination and control systems and methods | CN105317566B |
| firing fraction management in skip fire engine control | KR101849438 |
| firing fraction management in skip fire engine control | KR101858425 |
| firing fraction management in skip fire engine control | CN107120203B |
| skip fire transition control | US10107211 |
| firing fraction transition control | US10138860 |
| firing fraction management in skip fire engine control | CN104520563B |
| managing skip fire phase transitions | US10161328 |
| Internal Combustion Engine Control for Improved Fuel Efficiency | IN305277 |
| Method and apparatus for determining optimum skip fire firing profile | US10247121 |
| Firing fraction management in skip fire engine control | CN107131083B |
| Firing fraction management in skip fire engine control | KR101955146 |
| Firing fraction management in skip fire engine control | KR101957627 |
| internal combustion engine control for improved efficiency | US10273894 |
| ignition ratio management in skip fire engine control | JP6484210 |
| managing firing phase transitions | US10393085 |
| method and apparatus for determining optimum skip fire firing profile | CN106068373B |
| control of a partial cylinder deactivation engine | DE112013001783B4 |
Vehicle Integration
|
Patent Titles |
Patent Number |
| system and methods for improving efficiency in internal combustion engines | US8402942 |
| skip fire engine control | US8511281 |
| skip fire engine control | US8651091 |
| skip fire engine control | US9120478 |
| drive train slip for vibration mitigation during skip fire operation | US9267454 |
| control of manifold vacuum in skip fire operation | US9273643 |
| cam phaser control | US9291106 |
| engine braking controller | US9328672 |
| implementing skip fire with start/stop feature | US9387849 |
| torque converter lock up during skip fire operation | US9422880 |
| Cylinder re-activation fueling control systems and methods | US9429081 |
| torque compensation for detonation | US9482202 |
| averaging filter for skip fire engine operation | US9494088 |
| internal combustion engine control for improved fuel efficiency | US9541050 |
| using cylinder firing history for combustion control in a skip fire engine | US9664130 |
| multi-level skip fire | US9689327 |
| implementing skip fire with start/stop feature | US9725082 |
| system for managing catalytic converter temperature | US9726094 |
| deceleration cylinder cut-off | US9790867 |
| coordination of vehicle actuators during firing fraction transitions | US9878718 |
| coordination of vehicle actuators during firing fraction transitions | US9926868 |
| manifold pressure and air charge model | US9945313 |
| control of manifold vacuum in skip fire operation | CN104541037B |
| internal combustion engine control for improved fuel efficiency | KR101643526 |
| internal combustion engine control for improved fuel efficiency | KR101655717 |
| internal combustion engine control for improved fuel efficiency | JP6067503 |
| internal combustion engine control for improved fuel efficiency | JP6113807 |
| internal combustion engine control for improved fuel efficiency | CN104481713B |
| internal combustion engine control for improved fuel efficiency | KR101767862 |
| implementing skip fire with start/stop feature | CN106460687B |
| internal combustion engine control for improved fuel efficiency | US9982611 |
| autonomous driving with dynamic skip fire | US9983583 |
| cylinder re-activation fueling control systems and methods | CN105041483B |
| coordination of vehicle actuators during firing fraction transitions | US10094313 |
| dynamically varying an amount of slippage of a torque converter clutch provider between an engine and a transmission of a vehicle | US10100754 |
| Deceleration cylinder cut-off | CN107407212B |
| coordination of vehicle actuators during firing fraction transitions | US10259461 |
| air charge estimation for use in engine control | US10253706 |
| autonomous driving with dynamic skip fire | US10303169 |
| noise/vibration reduction control | US10400691 |
| engine control in fuel and/or cylinder cut off modes based on intake manifold pressure | US10408140 |
| noise/vibration control using variable spring absorber | US10493836 |
| torque compensation for detonation | CN105934574B |
Alternative Engine
|
Patent Titles |
Patent Number |
| hybrid vehicle with cylinder deactivation | US8464690 |
| system and methods for stoichiometric compression ignition engine control | US8646435 |
| hybrid powertrain control | US8880258 |
| hybrid vehicle with cylinder deactivation | US8892330 |
| internal combustion engine control for improved fuel efficiency | US9086024 |
| multi-level skip fire | US9399964 |
| multi-level skip fire | US9476373 |
| noise, vibration and harshness reduction in a skip fire engine control system | US9512794 |
| multi-level skip fire | US9689328 |
| hybrid powertrain control | CN103958312B |
| engine torque smoothing | US10060368 |
| multi-level skip fire | CN107076041B |
| multi-level skip fire | US10072592 |
| deceleration cylinder cut-off in a hybrid vehicle | US10167799 |
| engine torque smoothing | US10196995 |
| Noise, vibration and harshness reduction in a skip fire engine cntrol system | US10221786 |
| Internal combustion engine using variable valve lift and skip fire control | US10233796 |
| Compression ignition engine exhaust gas temperature control | US10247072 |
| Noise, vibration and harshness reduction in a skip fire engine control system | CN107110039B |
| Adaptive torque mitigation by micro-hybrid system | US10344692 |
| Noise, vibration and harshness reduction in a skip fire engine control system | JP6524546 |
| multi-level skip fire | DE112015005091B4 |
| multi-level skip fire | JP6568214 |
| engine torque smoothing | US10436133 |
| lean burn internal combustion engine exhaust gas temperature control | US10494971 |
| noise, vibration and harshness reduction in a skip fire engine control system | DE112016000318B4 |
Diagnostics
|
Patent Titles |
Patent Number |
| system and method for safe valve activation in a dynamic skip firing engine | US9175613 |
| engine diagnostics with skip fire control | US9212610 |
| misfire detection system | US9399963 |
| valve fault detection | US9562470 |
| determination of a high pressure exhaust spring in a cylinder of an internal combustion engine | US9581097 |
| engine diagnostics with skip fire control | US9581098 |
| system and method for safe valve activation in a dynamic skip firing engine | US9650923 |
| misfire detection in a dynamic skip fire engine | US9784644 |
| induction diagnostics for skip fire engine | US9835522 |
| valve fault detection | US9890732 |
| induction diagnostics for skip fire engine | US9891137 |
| induction diagnostics for skip fire engine | CN105189972B |
| induction diagnostics for skip fire engine | US9995652 |
| torque estimation in a skip fire engine control system | US10012161 |
| system and method for safe valve activation in a dynamic skip firing engine | CN105556099B |
| misfire detection in a dynamic skip fire engine | US10088388 |
| Engine diagnostics with skip fire control | CN108049977B |
| Engine diagnostics with skip fire control | CN105189979B |
