Diagnosis System for Cylinder Deactivation Device of Vehicle and Method for the Same
First Claim
1. A diagnosis system for a cylinder deactivation device (CDA device), comprising:
- a vehicle state detecting portion that detects operating states of a vehicle and/or an engine;
a control portion that controls ON/OFF states of the CDA device according to the operating states of the vehicle and/or the engine received from the vehicle state detecting portion after determining whether the operating states satisfy a predetermined operation condition, analyzes the operating states of the vehicle and/or the engine with respect to the ON/OFF states of the CDA device, determines whether the CDA device malfunctions, and outputs diagnostic codes according to function or malfunction state of the cylinder deactivation device; and
a display device that displays the function or malfunction state of the CDA device.
1 Assignment
0 Petitions
Accused Products
Abstract
A diagnosis system for a cylinder deactivation device (CDA device) may include a vehicle state detecting portion that detects operating states of a vehicle and/or an engine, a control portion that controls ON/OFF states of the CDA device according to the operating states of the vehicle and/or the engine received from the vehicle state detecting portion after determining whether the operating states satisfy a predetermined operation condition, analyzes the operating states of the vehicle and/or the engine with respect to the ON/OFF states of the CDA device, determines whether the CDA device malfunctions, and outputs diagnostic codes according to function or malfunction state of the cylinder deactivation device, and a display device that displays the function or malfunction state of the CDA device.
-
Citations
18 Claims
-
1. A diagnosis system for a cylinder deactivation device (CDA device), comprising:
-
a vehicle state detecting portion that detects operating states of a vehicle and/or an engine; a control portion that controls ON/OFF states of the CDA device according to the operating states of the vehicle and/or the engine received from the vehicle state detecting portion after determining whether the operating states satisfy a predetermined operation condition, analyzes the operating states of the vehicle and/or the engine with respect to the ON/OFF states of the CDA device, determines whether the CDA device malfunctions, and outputs diagnostic codes according to function or malfunction state of the cylinder deactivation device; and a display device that displays the function or malfunction state of the CDA device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A diagnosis method for a cylinder deactivation device (CDA device), comprising:
-
a) activating or deactivating the CDA device after determining whether first operating states of a vehicle and/or an engine satisfy a predetermined operation condition; b) determining whether the CDA device malfunctions according to second operating states of the vehicle after activating the CDA; and c) outputting diagnostic codes according to the determined results of step b) and displaying the determined results of the step b). - View Dependent Claims (14, 15, 16, 17, 18)
-
Specification