CYLINDER AIR MASS PREDICTION SYSTEMS FOR STOP-START AND HYBRID ELECTRIC VEHICLES
First Claim
Patent Images
1. An engine system comprising:
- a first module that determines a cylinder of an engine to be in one of M prediction types and generates a distance from intake signal indicating a number of prediction steps the cylinder is away from an intake stroke, where M is an integer greater than or equal to 3;
a second module that determines a cycle type of the cylinder, wherein the cycle type indicates a number of combustion cycles the cylinder has experienced from a last restart of the engine; and
a cylinder air charge module that estimates an air mass within the cylinder based on the distance from intake signal and the cycle type.
4 Assignments
0 Petitions
Accused Products
Abstract
An engine system includes a first module that determines a cylinder of an engine to be in one of M prediction types and generates a distance from intake signal indicating a number of prediction steps the cylinder is away from an intake stroke. M is an integer greater than or equal to 3. A second module determines a cycle type of the cylinder. The cycle type indicates a number of combustion cycles the cylinder has experienced from a last restart of the engine. A cylinder air charge module estimates an air mass within the cylinder based on the distance from intake signal and the cycle type.
37 Citations
22 Claims
-
1. An engine system comprising:
-
a first module that determines a cylinder of an engine to be in one of M prediction types and generates a distance from intake signal indicating a number of prediction steps the cylinder is away from an intake stroke, where M is an integer greater than or equal to 3; a second module that determines a cycle type of the cylinder, wherein the cycle type indicates a number of combustion cycles the cylinder has experienced from a last restart of the engine; and a cylinder air charge module that estimates an air mass within the cylinder based on the distance from intake signal and the cycle type. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
-
-
15. An engine system comprising:
-
an engine timer that determines an amount of time that an engine is in a stalled state; a first position module that determines a position of at least one of a crankshaft and a camshaft of an engine and generates a first position signal; a second position module that estimates a position of a piston within a cylinder of an engine and generates a second position signal; and a trapped air charge module that determines a trapped air mass within the cylinder based on the amount of time, the first position signal and the second position signal. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22)
-
Specification