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 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 |
| skip fire transition control | US9745905 |
| firing fraction management in skip fire engine control | US9964051 |
| 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 | CN102089511B |
| internal combustion engine control for improved efficiency | CN102713215B |
| firing fraction management in skip fire engine control | CN103890351B |
| Cylinder firing fraction determination and control systems and methods | CN105317566B |
| 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 |
| skip fire transition control | CN11098526B |
| skip fire transition control | CN110953109B |
| skip fire transition control | CN111022196B |
| firing fraction management in skip fire engine control | US11280276 |
| control of partial cylinder deactivation engine | DE112013001783B4 |
Vehicle Integration
|
Patent Titles |
Patent Number |
| system and methods for improving efficiency in internal combustion engines | US8402942 |
| 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 |
| internal combustion engine control for improved fuel efficiency | US9982611 |
| coordination of vehicle actuators during firing fraction transitions | US10259461 |
| 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 |
| engine diagnostics during cylinder cut off operation | US10900425 |
| internal combustion engine control for improved fuel efficiency | CN104481713B |
| cylinder re-activation fueling control systems and methods | CN105041483B |
| using SF cylinder deact while in reverse | US11078854 |
| dDSF charge flow & egr mngmnt | US11131259 |
| dDSF charge flow & egr Management | US11326532 |
| DSF transitions for fixed cda engines | US11359561 |
| deceleration cylinder cut-off in a hybrid vehicle | CN110573716B |
| eDSF torque smoothing for recharging & NVH reduction | US11421613 |
| disabling skip fire based on vehicle location & local regulations | US11428133 |
| using SF cylinder deact while in reverse | US11486321 |
| 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 |
| recharging management for skipping cylinders | US11946423 |
| deceleration cylinder cut-off in a hybrid vehicle | EP3690218 |
| deceleration cylinder cut-off in a hybrid vehicle | EP3693586 |
| deceleration cylinder cut-off in a hybrid vehicle | DE202018006867U1 |
| deceleration cylinder cut-off in a hybrid vehicle | DE202018006865U1 |
| deceleration cylinder cut-off in a hybrid vehicle | DE202018006866U1 |
| deceleration cylinder cut-off in a hybrid vehicle | DE202018006864U1 |
| deceleration cylinder cut-off in a hybrid vehicle | DE202018006868U1 |
| dynamic cylinder deactivation life factor to modify cylinder deactivation strategy | CN115066545B |
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 |
| noise, vibration and harshness reduction in a skip fire engine control system | US9512794 |
| engine torque smoothing | US10060368 |
| deceleration cylinder cut-off in a hybrid vehicle | US10167799 |
| engine torque smoothing | US10196995 |
| 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 |
| engine torque smoothing | US10787979 |
| 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 | DE112016000318B4 |
| noise, vibration and harshness reduction in a skip fire engine control system | CN110043377B |
| 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 | CN10998984B |
| eMotor torque smoothing for recharging | US11208093 |
| engine torque smoothing | US11208964 |
| engine cyliner output level modulation | US11236690 |
| lean burn internal combustion engine exhaust gas temperature control | CN10835081B |
| 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 |
| common rail fuel injection strategy during DSF operation | US11905908 |
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 |
| system and method for safe valve activation in a dynamic skip firing engine | US9650923 |
| induction diagnostics for skip fire engine | US9891137 |
| induction diagnostics for skip fire engine | US9995652 |
| torque estimation in a skip fire engine control system | US10012161 |
| 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 |
| torque estimation in a skip fire engine control system | CN109312677B |
| dianostic system and method for detecting internal combustion engine faults using exhaust pressure readings | US11415483 |
| exhaust valve failure diagnostics and management | US11624335 |
| diagnostics system and method for detecting internal combustion engine faults using exhaust pressure readings | US11635350 |
| exhaust valve failure diagnostics and management | US11959432 |
| misfire detection system | DE112014001479B4 |
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 |
| 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 |
| boosted converter for pulsed electric machine control | KR102660212 |
| electric machine torque adjust | US11916498 |
| DMD SRM phasing while matching torque output & demand | US11973447 |
| pulsed electric motor control | US12003202 |
| pulsed electric motor control | EP3753100 |
| optimizing battery efficiency by DMD controller for electric motor | US12145452 |
| reducing vibration for elec motors | US12199532 |
| eMachines with efficient torque transmission | US12206346 |
| feedback scaling for electric machines | US12244250 |
| delay reduction for pulsed WFSM | US12278581 |
| pulsed electric motor control | US12301149 |
| boosted voltage using H bridge topology | US12301151 |
| pulse modulated control with field weakening for improved motor efficiency | US12311772 |
| pulsed electric machine control for reducing NVH | US12319147 |
| pulsed control of multiple electronic machines | US12328088 |
| natural boost voltage from electric machine | US12370907 |
| pulsed electric machine control with soft start and end | US12424962 |
| maintaining rotor d-flux during pulsed electric machine operation | US12556118 |
| electric machine drive calibration, verification, and efficiency improvement | US12592662 |
| boosted converter for pulsed electric machine contorl | US12609646 |
| electric machine torque adjust | US12617288 |
| pulsed electric machine control for reducing NVH by pulse amplitude & frequency selection | US12697884 |
| boosted voltage across entire rotor winding | US12744478 |
| pulsed electric motor control | CN111886797B |
| boosted converter for pulsed electric machine control | KR102818825 |
| boosted converter for pulsed electric machine control | CN113647007B |
| dynamic motor drive optimizing electric motor controls to improve efficiency | CN117426049B |
| pulsed electric motor control | KR102783720 |
| pulsed electric motor control | KR102798642 |
