There are five categories of patents.
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.
The fifth category, DMD, covers primarily the application of Tula’s pulse density controls approach to electric motor systems.
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 | US8131447 |
| 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 |
| 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 |
| skip fire transition control | US10107211 |
| firing fraction transition control | US10138860 |
| managing skip fire phase transitions | US10161328 |
| Method and apparatus for determining optimum skip fire firing profile | US10247121 |
| internal combustion engine control for improved efficiency | US10273894 |
| managing firing phase transitions | US10393085 |
| firing fraction management in skip fire engine control | US10508604 |
| method and apparatus for determining optimum skip fire firing profile | US10941722 |
| firing fraction management in skip fire engine control | US10968841 |
| internal combustion engine control for improved efficiency | JP5395899 |
| internal combustion engine control for improved efficiency | CN102089511B |
| internal combustion engine control for improved efficiency | CN102713215B |
| firing fraction management in skip fire engine control | JP6041363 |
| firing fraction management in skip fire engine control | CN103890351B |
| Cylinder firing fraction determination and control systems and methods | CN105317566B |
| firing fraction management in skip fire engine control | CN107120203B |
| Internal Combustion Engine Control for Improved Fuel Efficiency | IN305277 |
| Firing fraction management in skip fire engine control | CN107131083B |
| ignition ratio management in skip fire engine control | JP6484210 |
| method and apparatus for determining optimum skip fire firing profile | CN106068373B |
| skip fire transition control | CN106715872B |
| internal combustion engine control for improved fuel efficiency | EP2307688 |
| Internal combustion engine control for improved fuel efficiency | DE602009063554.9 |
| firing fraction management in skip fire engine control | DE112012004327B4 |
| internal combustion engine control for improved fuel efficiency | FR2307688 |
| skip fire transition control | CN11098526B |
| skip fire transition control | CN110953109B |
| skip fire transition control | CN111022196B |
| firing fraction management in skip fire engine control | US11280276 |
| managing skip fire phase transitions | CN109863291B |
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 |
| drive train slip for vibration mitigation during skip fire operation | US9267454 |
| control of manifold vacuum in skip fire operation | US9273643 |
| Cylinder re-activation fueling control systems and methods | US9429081 |
| 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 |
| internal combustion engine control for improved fuel efficiency | US9982611 |
| autonomous driving with dynamic skip fire | US9983583 |
| 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 |
| 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 |
| engine control in fuel and/or cylinder cut off modes based on intake manifold pressure | US10408140 |
| dynamically varying an amount of slippage of torque converter clutch provided between an engine | US10519876 |
| managing engine firing fraction changes during gear shifts | US10611359 |
| dynamic valve control in a skip fire controlled engine | US10619584 |
| noise/vibration reduction control | US10634076 |
| managing engine firing fraction changes during gear shifts | US10814858 |
| engine diagnostics during cylinder cut off operation | US10900425 |
| adaptation of skip fire calibration to vehicle weight | US10927780 |
| split direct injection for reactivated cylinders of an internal combustion engine | US10982617 |
| internal combustion engine control for improved fuel efficiency | JP6067503 |
| internal combustion engine control for improved fuel efficiency | CN104481713B |
| implementing skip fire with start/stop feature | CN106460687B |
| cylinder re-activation fueling control systems and methods | CN105041483B |
| determine firing & pumping density during firing density transitions for a lean-burn ice | US11053828 |
| compression ignition engine exhaust gas temperature control | US11060430 |
| using SF cylinder deact while in reverse | US11078854 |
| dDSF charge flow & egr mngmnt | US11131259 |
| coordination of vehicle actuators during firing fraction transitions | CN109312675B |
| autonomous driving with dynamic skip fire | CN109563782B |
| edDSF torque smoothing for recharging & NVH reduction | US11143125 |
| fast torque response for boosted engines | US11248546 |
| dynamic valve control in a skip fire controlled engine | US11261807 |
| managing engine firing fraction changes during gear shifts | US11260844 |
| use of different pneumatic cylinder spring types in a variable displacement engine for engine and after treatment system temperature control | US11306672 |
| dDSF charge flow & egr Management | US11326532 |
| early direct fuel injection for internal combustion engines | US11333099 |
| DCCO | US11352966 |
| Cyl chrg trapng strats based on predictive skips & staggered valvetrain | US11352967 |
| DSF transitions for fixed cda engines | US11359561 |
| deceleration cylinder cut-off in a hybrid vehicle | CN110573716B |
| dynamic valve control in a skip fire controlled engine | CN110637153B |
| eDSF torque smoothing for recharging & NVH reduction | US11421613 |
| disabling skip fire based on vehicle location & local regulations | US11428133 |
| exhaust gas recirculation control in dynamic skip fire engine | US11441519 |
| firing fraction transition delay method | US11459965 |
| using SF cylinder deact while in reverse | US11486321 |
| Cyl chrg traping strats based on predictive skips & staggered valvetrain dependent operational strategies for ICE | US11492987 |
| skip cylinder compression braking | US11549455 |
| NVH reduction in a SF engine control system | US11555461 |
| Particulate filter soot management for internal combustion engines | US11560822 |
| dDSF charge flow & EGR mngmnt | US11619187 |
| use of different pneumatic cylinder spring types in a variable displancement engine for engine and aftertreatment system temperature control | US11624331 |
| exhaust gas recirculation control in a dynamic skip fire engine | US11624341 |
| fast torque response for boosted engines | US11635035 |
| exhaust gas recirculation control in a dynamic skip fire engine | CN114930007B |
| managing engine firing fraction changes | US11685380 |
| method for determininig pilot injection mass | US11713728 |
| motor torque smoothing by approximating periodic sinusoid waveform | US11719175 |
| DSF transitions FOR for fixed CDA engines | US11761395 |
| using skip fire with power take-off | US11724594 |
| integrated CDA with electrified powertrain | US11767797 |
| system & method for bypassing a compromised engine cylinder via cylinder deactivation | US11802519 |
| method for determininig pilot injection mass | US11835004 |
| sf operation based on injector tip temp stagnant fuel temp or libricatio requirements | US11859567 |
| optimizing combustion recipes to improve engine performance and emissions for variable displacement engines | CN114930008B |
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 |
| noise, vibration and harshness reduction in a skip fire engine control system | US9512794 |
| multi-level skip fire | US9689328 |
| engine torque smoothing | US10060368 |
| 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 |
| Adaptive torque mitigation by micro-hybrid system | US10344692 |
| engine torque smoothing | US10436133 |
| lean burn internal combustion engine exhaust gas temperature control | US10494971 |
| multi-level skip fire | US10557427 |
| internal combustion engine air charge control | US10662883 |
| engine torque smoothing | US10787979 |
| adaptive torque mitigation by micro+hybrid system | US10954877 |
| dynamic charge compression ignition engine with multiple aftertreatment systems | US11008995 |
| hybrid powertrain control | CN103958312B |
| Noise, vibration and harshness reduction in a skip fire engine control system | CN107110039B |
| Noise, vibration and harshness reduction in a skip fire engine control system | JP6524546 |
| noise, vibration and harshness reduction in a skip fire engine control system | DE112016000318B4 |
| noise, vibration and harshness reduction in a skip fire engine control system | CN110043377B |
| determine firing & pumping density during firing density transitions for lean-burn ice | US11053828 |
| compression ignition exhaust gas temperature control | US11060430 |
| NVH reduction in a skip fire engine control system | US11136928 |
| NVH reduction in a skip fire engine control system | CN110043378B |
| engine torque smoothing | CN109641587B |
| NVH reduction in a skip fire engine control system | CN110067663B |
| NVH reduction in a skip fire engine control system | CN109989841B |
| eMotor torque smoothing for recharging | US11208093 |
| engine torque smoothing | US11208964 |
| multi-level firing engine control | US11236689 |
| engine cyliner output level modulation | US11236690 |
| lean burn internal combustion engine exhaust gas temperature control | CN108350819B |
| determining firing density of a skip fire controlled lean-burn engine using air-fuel ratio and exhaust temperatures | US11300026 |
| compression ignition engine exhaust gas temperature control | US11333053 |
| NVH reduction in a SF engine control system | US11359562 |
| integrated CDA with electrified powertrain | US11378022 |
| eMotor torque smoothing for recharging | US11560135 |
| compression ignition engine exhaust gas temperature control | US11560818 |
| compression ignition engine exhaust gas temperature control | US11674423 |
| determining firing density of a skip fire controlled lean-burn engine using air-fuel ratio and exhaust temperatures | US11680505 |
| integrated CDA with electrified powertrain | US11378022 |
Diagnostics
|
Patent Titles |
Patent Number |
| system and method for safe valve activation in a dynamic skip firing engine | US9175613 |
| 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 | US9995652 |
| torque estimation in a skip fire engine control system | US10012161 |
| misfire detection in a dynamic skip fire engine | US10088388 |
| induction diagnostics for skip fire engine | CN105189972B |
| system and method for safe valve activation in a dynamic skip firing engine | CN105556099B |
| induction diagnostics for skip fire engine | CN106795827B |
| machine learning for misfire detection in dynamic firing level modulation controlled engine of a vehicle | US11125175 |
| diagnostic system and method for detecting internal combustion engine faults using exhaust pressure readings | US11143575 |
| torque estimation in a skip fire engine control system | CN109312677B |
| ml for misfire detection in a dynamic firing level modulation controlled engine of a vehicle | US11326534 |
| dianostic system and method for detecting internal combustion engine faults using exhaust pressure readings | US11415483 |
| Machine learning for engine fault diagnostics | US11434839 |
| exhaust valve failure diagnostics and management | US11624335 |
| diagnostics system and method for detecting internal combustion engine faults using exhaust pressure readings | US11635350 |
| diagnostics system and method for detecting internal combustion engine faults using exhaust pressure readings | CN114930007B |
| diagnostics system and method for detecting internal combustion engine faults using exhaust pressure readings | JP7307928 |
DMD
|
Patent Titles |
Patent Number |
| Pulsed Electric Motor Control | US10742155 |
| Boosted converted for pulsed electric machine control | US10944352 |
| pulsed electric machine control for reducing nvh | US11077759 |
| Pulsed Electric Motor Control | US11088644 |
| magnetically de-coupled, separately controlled, mutiple electric machine assembly for driving a common shaft | US11133763 |
| pulsed electric machine control using tables | US11133767 |
| pulse modulated control with field weakening for improved motor efficiency | US11167648 |
| pulse electric motor control | US11228272 |
| optimizing battery efficiency by DMD controller for electric motor | US11345241 |
| pulsed electric motor | JP7082679 |
| pulsed electric machine control using tables | US11427177 |
| magnetically de-coupled, separately controlled, multiple electric machine assembly for driving a common shaft | US11545918 |
| reducing vibration for elec motors | US11557996 |
| pulse modulated control with field weakening for improve motor efficiency | US11623529 |
| pulsed electric motor contorl | US11626827 |
| pulsed electric machine control for reducing NVH | US11628730 |
| HW electro-mechanical arrangement | US11637466 |
| optimizing waveforms for elec motors | US11637513 |
| optimizing battery efficiency by DMD controller for electric motor | US11673476 |
| eMachines with efficient torque transmission | US11695361 |
| boosted converter for pulsed electric machine control | KR102561505 |
| pulsed electric motor | IN420413 |
| boosted converter for pulsed electric machine control | US11863096 |
| methods for improving rate of rise of torque in electric machines with sator current biasing | US11888424 |
| boosted converter for pulsed electric machine control | EP3939155 |
