Discrete variable valve lift engine systems and methods

Patent · 09 March 2021

OSTI ID:1805604

McCarthy, Jr., James E.; Brownell, Edwin Scott; Saggam, Nikhil; Dharmadhikari, Susheel

A method of providing a rocker arm set for a valvetrain includes providing a first rocker arm configured as a switching rocker arm for a first intake valve, and providing a second rocker arm configured as a fixed rocker arm for a second intake valve, the second rocker arm operating in a normal Otto cycle mode. The first rocker arm operates in a late intake valve closing (LIVC) mode where the first rocker arm is configured to close the first intake valve later than the second intake valve.

• Research Organization: Eaton Corp., Cleveland, OH (United States)
• Sponsoring Organization: USDOE
• DOE Contract Number: EE0005981
• Assignee: Eaton Corporation (Cleveland, OH)
• Patent Number(s): 10,941,680
• Application Number: 16/022,054
• OSTI ID: 1805604
• Country of Publication: United States
• Language: English