Determination of a high pressure exhaust spring in a cylinder of an internal combustion engine
First Claim
Patent Images
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.
1 Assignment
0 Petitions
Accused Products
Abstract
A variety of methods and arrangements for determining whether a high pressure exhaust spring is present in a cylinder of an internal combustion engine are described. For spark ignition engines, the electrical properties of the spark plug spark gap may be used to determine whether a high pressure exhaust spring is present.
-
Citations
19 Claims
-
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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. A control system for an internal combustion engine operating in a skip fire manner, each cylinder having at least one intake valve and at least one exhaust valve, the control system comprising:
-
an electrical circuit arranged to generate a test spark across a spark gap in a cylinder; and a cylinder control module that is arranged to measure at least one electrical property of the spark gap to determine whether there is a high pressure exhaust spring in the cylinder. - View Dependent Claims (16, 17, 18, 19)
-
Specification