US Patent No. 9,581,097

DETERMINATION OF A HIGH PRESSURE EXHAUST SPRING IN A CYLINDER OF AN INTERNAL COMBUSTION ENGINE


Patent No. 9,581,097
Issue Date February 28, 2017
Title Determination Of A High Pressure Exhaust Spring In A Cylinder Of An Internal Combustion Engine
Inventorship Matthew A. Younkins, San Jose, CA (US)
John W. Parsels, San Jose, CA (US)
Joel D. Van Ess, Campbell, CA (US)
Siamak Hashemi, Farmington Hills, MI (US)
Assignee Tula Technology, Inc., San Jose, CA (US)

Claim of US Patent No. 9,581,097

1. A method of determining whether a high pressure exhaust spring is present in a cylinder of a spark ignition, internal combustion
engine having a reciprocating piston, the method comprising:
measuring at least one electrical property of a spark gap in a cylinder; and
based on the electrical property measurement, determining whether a high pressure exhaust spring is present in the cylinder.