US 9,810,192 B1
Method and apparatus for controlling operation of an internal combustion engine
Cherian A. Idicheria, Novi, MI (US); and Paul M. Najt, Bloomfield Hills, MI (US)
Assigned to GM Global Technology Operations LLC, Detroit, MI (US)
Filed by GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed on Apr. 13, 2016, as Appl. No. 15/97,442.
Int. Cl. F02P 17/12 (2006.01); F02P 23/04 (2006.01); F02M 27/04 (2006.01); F02P 9/00 (2006.01); F02D 41/30 (2006.01); F02D 41/00 (2006.01); H01T 13/02 (2006.01)
CPC F02P 17/12 (2013.01) [F02D 41/0047 (2013.01); F02D 41/30 (2013.01); F02M 27/042 (2013.01); F02P 9/007 (2013.01); F02P 23/04 (2013.01); H01T 13/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An internal combustion engine, comprising:
a cylinder block, a cylinder head and a piston cooperating to form a combustion chamber in a cylinder bore of the cylinder block;
a plasma ignition controller electrically connected to a groundless barrier discharge plasma igniter, wherein the groundless barrier discharge plasma igniter includes a tip portion disposed to protrude into the combustion chamber;
a current sensor disposed to monitor a secondary current flow between the plasma ignition controller and the groundless barrier discharge plasma igniter;
the plasma ignition controller disposed to execute a plasma discharge event in the combustion chamber via the groundless barrier discharge plasma igniter; and
a controller disposed to monitor a magnitude of the secondary current flow via the current sensor during the plasma discharge event, wherein the controller includes an instruction set, the instruction set executable to evaluate integrity of the groundless barrier discharge plasma igniter based upon the magnitude of the secondary current flow during the plasma discharge event.