Abstract:
A vehicle active network (12) communicatively couples devices (14-20) within a vehicle (10). Device operation is independent of the interface (22-28) of the device (14-20) with the active network (12). Additionally, the architecture of the active network (12) provides one or more levels of communication redundancy. The architecture provides for the total integration of vehicle systems and functions, and permits plug-and-play device integration and upgradeability.
Abstract:
A vehicle active network (12) communicatively couples devices (14-20) within a vehicle (10). Device operation is independent of the interface (22-28) of the device (14-20) with the active network (12). Additionally, the architecture of the active network (12) provides one or more levels of communication redundancy using multiple paths. The architecture provides for the total integration of vehicle systems and functions, and permits plug-and-play device integration and upgradeability.
Abstract:
A vehicle active network (12) communicatively couples devices (14-20) within a vehicle (10) and includes a reserved portion (64). Device operation is independent of the interface (22-28) of the device (14-20) with the active network (12). Additionally, the architecture of the active network (12) provides one or more levels of communication redundancy. The architecture provides for the total integration of vehicle systems and functions, and permits plug-and-play device integration and upgradeability.
Abstract:
An apparatus and method of detecting a leak in an evaporative emissions system measures vapor flow out of the evaporative emissions system while maintaining a zero pressure difference from inside a fuel tank to atmosphere and provides a reference vapor flow variable dependent on the measurement (317). A pressurized vapor and leak flow variable is measured (323) dependent on measured vapor flow out of the evaporative emissions system while maintaining a pressure difference of 10'' of water from inside the fuel tank to atmosphere. A leak is indicated (327) if a difference between the reference vapor flow variable and the pressurized vapor and leak flow variable is greater than a predetermined leak flow factor.
Abstract:
When a bus protocol message arrives on a connecting node in the network, a bus driver in the node captures the message and stores it into a message buffer where the message can be further processed by a tunneling application. Each received bus protocol message is broken, or combined, to suit the available packet size of the underlying transmit layer of the switch fabric network. Data portions such as message identification, sequence number, port number, bus data type, and data length are reserved in each data packet. If the message is being broken down, the sequence number is used to differentiate the broken segments of the bus protocol message. The bus data type is used to indicate the type of protocol data being transmitted over the switch fabric. The same tunneling application may be used to reassemble the bus protocol message at a receiving node.
Abstract:
A fault detection system (20) for determining whether a fault exists with a rotating element (30a, 30b, 30c) of a vehicle. The system (20) includes a transducer (22), a diagnosis sampler (24), a sensor (56a, 56b, 56c), and a controller (26). The transducer (22) may be a microphone located in the vehicle for converting sounds to an electrical signal. The electrical signal includes a noise component generated from the rotating element. The diagnosis sampler (24) is connected to the transducer and provides a sample of the electrical signal from the transducer (22) to the controller (26). The sensor (56a, 56b, 56c) obtains data relating to the rotating element. The controller has functional aspects such as a synchronous resample (46), a spectrum analysis (48a, 48b, 48c), and a fault detect (50a, 50b, 50c). There is also a method of detecting a fault associated with a rotating element (30a, 30b, 30c) in a vehicle using the above-described system.
Abstract:
A vehicle active network (12) communicatively couples devices (14-20) within a vehicle (10). Device operation is independent of the interface (22-28) of the device (14-20) with the active network (12). Additionally, the architecture of the active network (12) provides one or more levels of communication redundancy. The architecture provides for the total integration of vehicle systems and functions, and permits plug-and-play device integration and upgradeability.
Abstract:
A vehicle active network (12) communicately couples devices (14-20) within a vehicle (10). Device operation is independent of the interface (22-28) of the device (14-20) with the active network (12). Additionally, the architecture of the active network (12) provides one or more levels of communication redundancy. The architecture provides for the total integration of vehicle systems and functions, and permits plug-and-play device integration and upgradeability.
Abstract:
A vehicle active network (12) communicatively couples devices (14-20) within a vehicle (10). Device operation is independent of the interface (22-28) of the device (14-20) with the active network (12). Additionally, the architecture of the active network (12) provides one or more levels of communication redundancy. The architecture provides for the total integration of vehicle systems and functions, and permits plug-and-play device integration and upgradeability.
Abstract:
A fault detection system (20) for determining whether a fault exists with a rotating element (30a, 30b, 30c) of a vehicle. The system includes a transducer (22), a diagnosis sampler (24), and a controller (26). The transducer (22) may be a microphone located in the vehicle for converting sounds to an electrical signal. The electrical signal includes a noise component generated from the rotating element. The diagnosis sampler (24) is connected to the transducer and provides a sample of the electrical signal from the transducer (22) to the controller (26). The controller (26) has functional aspects such as an envelope detect (44), a spectrum analysis (48a, 48b, 48c), and a fault detect (50a, 50b, 50c). There is also a method of detecting a fault associated with a rotating element (30a, 30b, 30c) in a vehicle using the above-described system.