(19)
(11) EP 4 542 012 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
04.06.2025 Bulletin 2025/23

(43) Date of publication A2:
23.04.2025 Bulletin 2025/17

(21) Application number: 24205148.0

(22) Date of filing: 08.10.2024
(51) International Patent Classification (IPC): 
F01L 1/344(2006.01)
F02D 13/04(2006.01)
 F02D 13/02(2006.01)
(52) Cooperative Patent Classification (CPC):
F01L 2301/00; F01L 2800/01; F01L 1/3442; F01L 2001/34479; F01L 2001/34483; F01L 2001/34456; F01L 2001/34469; F01L 2001/34496; F01L 2800/02; F01L 2800/04; F01L 2820/01; F01L 2820/033; F02D 13/0219; F02D 2013/0292; F02D 13/04
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC ME MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA
Designated Validation States:
GE KH MA MD TN

(30) Priority: 19.10.2023 US 202363591523 P

(71) Applicant: Cummins, Inc.
Columbus, Indiana 47201 (US)

(72) Inventors:
  • BENNETT, Alan
    Indiana, 47201 (US)
  • DE FREITAS SILVA, Leonarda
    Indiana, 47201 (US)
  • SNYDER, John
    Indiana, 47201 (US)
  • HEALD, Brett
    Indiana, 47201 (US)
  • SAGENER, Semih
    Indiana, 47201 (US)
  • PETKAR, Gautam
    Indiana, 47201 (US)
  • NORTON, Brendan
    Indiana, 47201 (US)
  • KOMBANAIPUDUR SHANMUGASUNDARAM, Uma
    Indiana, 47201 (US)

(74) Representative: Cleveland Scott York 
5 Norwich Street
London EC4A 1DR
London EC4A 1DR (GB)

   


(54) CAM PHASERS FOR INTERNAL COMBUSTION ENGINES


(57) An internal combustion engine (12) includes a plurality of pistons (16) housed in respective ones of a plurality of cylinders (14), an air intake system to provide air to the plurality of cylinders through respective ones of a plurality of intake valves (22), and an exhaust system to release exhaust gas from the plurality of cylinders through respective one of a plurality of exhaust valves (24). A cam phaser (90) is provided that is controllable to advance or retard the exhaust valve opening/closing timing by up to 90 crank angle degrees.







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