Engine operation during cylinder deactivation
First Claim
Patent Images
1. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
- an engine control that generates a load control signal based on one of an activation and a deactivation signal;
a vehicle speed monitor that generates a deceleration signal, wherein said load control signal is further based on said deceleration signal; and
an accessory control that manipulates operation of an accessory driven by said engine based on said load control signal.
13 Assignments
0 Petitions
Accused Products
Abstract
An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine system includes an engine control that generates a load control signal based on one of an activation and a deactivation signal. An accessory control manipulates operation of an accessory driven by the engine based on the load control signal.
-
Citations
41 Claims
-
1. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
-
an engine control that generates a load control signal based on one of an activation and a deactivation signal; a vehicle speed monitor that generates a deceleration signal, wherein said load control signal is further based on said deceleration signal; and an accessory control that manipulates operation of an accessory driven by said engine based on said load control signal. - View Dependent Claims (2, 3, 4, 5, 6)
-
-
7. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
-
an alternator that is driven by said engine and that has an adjustable duty cycle; and a controller that transitions said engine between said activated mode and said deactivated mode, that monitors a velocity of a vehicle driven by said engine and that increases said duty cycle of said alternator when said vehicle decelerates during said deactivated mode. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
13. A method for controlling engine operation during activated and deactivated modes in a displacement on demand engine, comprising:
-
detecting deceleration of a vehicle driven by said engine; and increasing a duty cycle of an alternator driven by said engine when said vehicle decelerates during operation of said engine during said deactivated mode. - View Dependent Claims (14, 15, 16, 17, 18)
-
-
19. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
-
a pump that is driven by said engine and that has an adjustable displacement; and a controller that transitions said engine between said activated mode and said deactivated mode and that decreases a displacement of said pump when said engine transitions from said activated mode to said deactivated mode. - View Dependent Claims (20, 21, 22, 23, 24)
-
-
25. A method for controlling engine operation during activated and deactivated modes in a displacement on demand engine, comprising:
-
transitioning said engine from said activated mode to said deactivated mode; and reducing a displacement of a pump driven by said engine. - View Dependent Claims (26, 27, 28, 29, 30, 31)
-
-
32. An engine control system for controlling engine operation in activated and deactivated modes in a displacement on demand engine, comprising:
-
cylinders that are selectively activated and deactivated; a controller that transitions said engine between said activated mode and said deactivated mode, that monitors a velocity of a vehicle driven by said engine and that terminates fuel supply to activated cylinders of said engine when said vehicle decelerates during said deactivated mode; and an alternator that is driven by said engine and that has an adjustable duty cycle, wherein said controller increases said duty cycle of said alternator when said vehicle decelerates during said deactivated mode. - View Dependent Claims (33, 34, 35, 36)
-
-
37. A method for controlling engine operation during activated and deactivated modes in a displacement on demand engine, comprising:
-
detecting deceleration of a vehicle driven by said engine; terminating fuel supply to activated cylinders of said engine when said vehicle decelerates during said deactivated mode; and increasing a duty cycle of an alternator driven by said engine when said vehicle decelerates during operation of said engine during said deactivated mode. - View Dependent Claims (38, 39, 40, 41)
-
Specification