US 12,234,781 B1
Engine braking strategy using cylinder flow-through path for optimizing braking power
Matthew Wolk, Peoria, IL (US); Michael D. Roley, Washington, IL (US); John R. McDonald, Peoria, IL (US); Ry C. Colwell, Dunlap, IL (US); and Quinton Burcar, Chillicothe, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Apr. 12, 2024, as Appl. No. 18/633,622.
Int. Cl. F02D 13/04 (2006.01); F02D 13/02 (2006.01); F02D 41/00 (2006.01)
CPC F02D 13/04 (2013.01) [F02D 13/0207 (2013.01); F02D 41/0007 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of engine braking comprising:
opening both an intake valve and an exhaust valve for a first cylinder in an engine to establish a flow-through path from an intake manifold to an exhaust manifold;
opening an exhaust valve for a second cylinder in the engine a first time to charge the second cylinder with air fed through the flow-through path;
braking the engine via the second cylinder charged with the air fed through the flow-through path; and
opening the exhaust valve for the second cylinder a second time to blow-down the second cylinder.