Firing fraction management in skip fire engine control
MR Pirjaberi, AS Tripathi, LJ Serrano - US Patent 9,086,020, 2015 - Google Patents
In various described embodiments skip fire control is used to deliver a desired engine
output. A controller determines a skip fire firing fraction and (as appropriate) associated …
output. A controller determines a skip fire firing fraction and (as appropriate) associated …
Multi-level skip fire
MA Younkins, LJ Serrano - US Patent 9,399,964, 2016 - Google Patents
F02D 4I/00(2006.01)(57) ABSTRACT F02D I3/06(2006.01) F02D 4I/04(2006.01) In one
aspect, a method for controlling operation of an inter FO2D 13/02(2006.01) nal combustion …
aspect, a method for controlling operation of an inter FO2D 13/02(2006.01) nal combustion …
Skip fire engine control
AS Tripathi, CJ Silvestri, CW Chandler, C Hand… - US Patent …, 2013 - Google Patents
A variety of methods and arrangements for controlling the operation of an internal
combustion engine in a skip fire variable displacement mode are described. Generally, an …
combustion engine in a skip fire variable displacement mode are described. Generally, an …
Adaptive torque mitigation by micro-hybrid system
M Nagashima, MR Pirjaberi, LJ Serrano… - US Patent …, 2019 - Google Patents
A variety of methods and arrangements for reducing noise, vibration and harshness (NVH)
in a skip fire engine control system are described. In one aspect, a firing sequence is used to …
in a skip fire engine control system are described. In one aspect, a firing sequence is used to …
Look-up table based skip fire engine control
LJ Serrano - US Patent 9,200,587, 2015 - Google Patents
(57) ABSTRACT A variety of skip fire engine controllers and control methods are described
that utilize look-up tables, state machines, or other data structures to determine the …
that utilize look-up tables, state machines, or other data structures to determine the …
Engine torque smoothing
MR Pirjaberi, K Eisazadeh-far, SE Carlson… - US Patent …, 2018 - Google Patents
Methods, devices, estimators, controllers and algorithms are described for estimating the
torque profile of an engine and/or for controlling torque applied to a powertrain by one or …
torque profile of an engine and/or for controlling torque applied to a powertrain by one or …
Lean burn internal combustion engine exhaust gas temperature control
MA Younkins, SK Chen, MA Wilcutts - US Patent 10,247,072, 2019 - Google Patents
8, 886, 422 B2 11/2014 Sujan et al. 8, 892, 330 B2 11/2014 Yuille et al. 8, 931, 255 B2
1/2015 Wilson 9, 086, 020 B2 7/2015 Pirjaberi et al. 9, 267, 454 B2 2/2016 Wilcutts et al. 9 …
1/2015 Wilson 9, 086, 020 B2 7/2015 Pirjaberi et al. 9, 267, 454 B2 2/2016 Wilcutts et al. 9 …
Engine torque smoothing
MR Pirjaberi, K Eisazadeh-far, SE Carlson… - US Patent …, 2019 - Google Patents
Primary Examiner-Thomas Moulis (74) Attorney, Agent, or Firm—Beyer Law Group LLP (57)
ABSTRACT Methods, devices, estimators, controllers and algorithms are described for …
ABSTRACT Methods, devices, estimators, controllers and algorithms are described for …
Multi-level skip fire
MA Younkins, LJ Serrano - US Patent 9,689,327, 2017 - Google Patents
Related US Application Data is a continuation of application No. 14/188.479, filed on Feb.
24, 2014, now Pat. No. 9,086,024, which is a continuation of application No. 13/004,844 …
24, 2014, now Pat. No. 9,086,024, which is a continuation of application No. 13/004,844 …
Adaptive torque mitigation by micro-hybrid system
M Nagashima, MR Pirjaberi, LJ Serrano… - US Patent …, 2020 - Google Patents
(57) ABSTRACT A variety of methods and arrangements for reducing noise, vibration and
harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing …
harshness (NVH) in a skip fire engine control system are described. In one aspect, a firing …