Inventor
JOHN BOBBY
US38 patents
Patents
38 patentsUS9587606B2Mar 7, 2017
Ducted combustion systems utilizing tubular ducts
CATERPILLAR INC20 citations89
US9869270B1Jan 16, 2018
Piston design for jet placement
CATERPILLAR INC8 citations84
US9518547B2Dec 13, 2016
Fuel injector including extensions for split spray angles
CATERPILLAR INC7 citations84
US9803538B2Oct 31, 2017
Ducted combustion systems utilizing duct structures
CATERPILLAR INC15 citations81
US10823106B1Nov 3, 2020
Early pilot lean burn strategy in dual fuel engine using targeted pilot flames
CATERPILLAR INC2 citations73
US10690107B1Jun 23, 2020
Composite spark and liquid pilot igniter for dual fuel engine
CATERPILLAR INC3 citations73
US9915215B2Mar 13, 2018
Fuel injector for pulsed injections and system and method thereof
CATERPILLAR INC3 citations73
US10619594B2Apr 14, 2020
Combustion system for an internal combustion engine
CATERPILLAR INC4 citations72
US10563597B2Feb 18, 2020
Fuel injector
CATERPILLAR INC2 citations72
US11359590B1Jun 14, 2022
Igniter for dual fuel engine having liquid fuel outlet checks and spark ignition source
CATERPILLAR INC2 citations71
US10900450B1Jan 26, 2021
Fuel system, fuel injector nozzle assembly, and engine head assembly structured for ducted fuel injection
CATERPILLAR INC3 citations71
US10767610B2Sep 8, 2020
Liquid fuel injector having dual nozzle outlet sets, fuel system, and method
CATERPILLAR INC3 citations71
US12209560B1Jan 28, 2025
Fuel admission tube for gaseous fuel engine and engine operating method
CATERPILLAR INC0 citations61
US12078129B2Sep 3, 2024
Gaseous fuel engine having non-axisymmetric fuel admission valve and method
CATERPILLAR INC0 citations61
US10563632B2Feb 18, 2020
Fuel injector
CATERPILLAR INC1 citations61
US11639701B1May 2, 2023
Gaseous fuel engine configuration and method using always-open fuel admission ports
CATERPILLAR INC0 citations60
US11598300B2Mar 7, 2023
Fuel system for reducing fuel targeting errors and engine operating method
CATERPILLAR INC0 citations60
US11549474B2Jan 10, 2023
Ducted fuel injector having nested checks with non-rotating outer check and method of operating same
CATERPILLAR INC1 citations60
US10989153B2Apr 27, 2021
Fuel system for reducing fuel targeting errors and engine operating method
CATERPILLAR INC1 citations60
US12540593B2Feb 3, 2026
Fuel injector assembly having sleeve with flow-directing cap and engine system using same
CATERPILLAR INC0 citations58
US12516638B2Jan 6, 2026
Dual fuel engine combustion control strategy optimizing pilot shot quantities
CATERPILLAR INC0 citations52
US12337820B2Jun 24, 2025
Machine having hydrogen engine hybrid power system and control strategy for same
CATERPILLAR INC0 citations52
US12110851B2Oct 8, 2024
Fuel injector in an engine having spray orifice set configured for offset positioning and engine operating method
CATERPILLAR INC0 citations52
US10982601B2Apr 20, 2021
Combustion control system and method for switching between spark and pilot-ignited operating modes in dual fuel engine
CATERPILLAR INC0 citations52
US10718257B1Jul 21, 2020
Dual-fuel combustion method and system
CATERPILLAR INC0 citations52
US10704492B1Jul 7, 2020
Piston for an internal combustion engine
CATERPILLAR INC0 citations52
US10087882B2Oct 2, 2018
Piston design for splitting jets
CATERPILLAR INC1 citations52
US9995203B2Jun 12, 2018
Piston design for flow re-direction
CATERPILLAR INC1 citations51
US12448939B1Oct 21, 2025
Fuel admission tube for enhanced mixing in gaseous fuel engine and engine operating method
CATERPILLAR INC0 citations50
US11885290B2Jan 30, 2024
Fuel injector and nozzle assembly having dual concentric check assembly and ducted spray orifices
CATERPILLAR INC0 citations50
US10823131B2Nov 3, 2020
Dual fuel combustion control based on covaried spark production and pilot shot delivery
CATERPILLAR INC0 citations50
US11225933B2Jan 18, 2022
Twin outlet check liquid fuel injector for dual fuel system
CATERPILLAR INC0 citations47
US11118533B1Sep 14, 2021
Piston for internal combustion engine having congruous combustion bowl and gallery surfaces and method of making the same
CATERPILLAR INC0 citations47
US10934966B2Mar 2, 2021
Combustion phasing control for high substitution lean burn of gaseous fuels in dual fuel engine
CATERPILLAR INC0 citations47
US11274628B2Mar 15, 2022
Internal combustion engine and piston having stepped combustion bowl with non-axisymmetric profile
CATERPILLAR INC0 citations45
US10876495B2Dec 29, 2020
Piston design for splitting jets into streams
CATERPILLAR INC0 citations41
US10563609B2Feb 18, 2020
Fuel injector
CATERPILLAR INC0 citations40
US10378495B2Aug 13, 2019
Fuel system having purging capability for reduced fuel dribble
CATERPILLAR INC0 citations39