摘要:
Channel trending, including determining a number of viewers watching a multimedia program, is achieved in a digital television network. Cached multimedia frames that correspond to portions of the multimedia program are maintained, for example, on a device located on an edge (i.e., in a network edge device) of the digital television network. In response to a request from a client device (e.g., a set-top box) to receive the multimedia program, cached multimedia frames are fed from the edge device to the client device. Upon a seamless transfer or handoff resulting in a simulcast replicator or multicast replicator providing further portions of the multimedia program, a signal (e.g., a simple network management protocol TRAP statement) is sent to a viewership statistic server for incrementing a counter.
摘要:
In one embodiment, a removable air filter is mounted proximate to where electrical equipment is mounted in a case. The filter has at least two sections with different finite air impedances. The filter is constructed of a filter media mounted inside of a frame. When the equipment arrangement is modified, the filter can be replaced with another filter with a different impedance profile, such that the air flow remains optimal for many equipment arrangements. The impedance profile can also be tailored to compensate for the characteristic airflow of the case design. Other embodiments are described and claimed.
摘要:
A method for discontinuing combustion in a cylinder of an internal combustion engine having an intake manifold and an emission control device coupled downstream of thereof, where the cylinder has at least one valve, the method comprising during a shut-down and after a final combustion event in the cylinder, adjusting valve timing of the valve to reduce a flow of gasses from the engine to the emission control device.
摘要:
A method for controlling an engine having at least two cylinders, at least one of which having at least an adjustable valve, the method comprising before engine rotation closing electrically actuated valves in at least a first and a second cylinder; fueling at least said first cylinder with a first fuel amount and said second cylinder with a second fuel amount; and performing a first spark in at least one of said first cylinder and said second cylinder; and after engine rotation, firing each cylinder of the engine in a sequential firing order without changing a number of strokes in any cylinder of the engine.
摘要:
An improved cold climate air-source heat pump comprising at least a primary compressor, a booster compressor, a first heat exchanger associated with an indoor environment and a second heat exchanger associated with an outdoor environment and with one heat exchanger acting as an evaporator and the other heat exchanger acting as a condenser, an expansion device, flow conduit means for circulating a refrigerant fluid in a closed loop, a first sensor means for sensing the temperature of the internal ambient air, a second sensor means for sensing the temperature of the external ambient air, a third sensor means for sensing the temperature of the refrigerant fluid flowing between the booster compressor and the primary compressor, a fourth sensor means for sensing the operative state of the primary compressor, a primary compressor operation control means responsive to inputs from the first sensor means, and a booster compressor operation control means responsive to inputs from the second, third, and fourth sensor means. The booster compressor operation control means is configured to initiate and shut down operation of the booster compressor based on inputs from the various sensor means, to ensure safe operation of the system and improved durability of the air-source heart pump.
摘要:
A method for controlling stopping and starting of an engine having a variable event valvetrain is described. According to the method engine valves may be used to reduce engine evaporative emissions as well as engine starting emissions. Since the engine configuration shown has electrically actuated intake and exhaust valves it is possible to reconfigure the engine operating sequence during a start. For example, the pistons for cylinders two and three are in the same position at the same time. This allows either cylinder to be set to an intake stroke during a subsequent engine restart when the piston is traveling away from the cylinder head while the companion cylinder is set to the expansion or power stroke. Thus, the cylinder having the first intake stroke could be configured to provide a first combustion event during an engine restart. On the other hand, the cylinder set to the power stroke could have been set to the intake stroke such that it is the first cylinder to provide a combustion stroke during a restart.
摘要:
A method of controlling an engine, the method comprising of providing fuel having a blend to a cylinder of the engine, actively varying said fuel blend in response to at least an operating condition, and where during a transient operating condition, said blend is adjusted to increase a heat capacity of said fuel to reduce a tendency for knock.
摘要:
A method for an engine configured to deliver an actively varying relative ratio of a first and second fuel via a delivery system having a first and second injector for a cylinder of the engine, where the first fuel has a lesser relative amount of alcohol, the method comprising of varying an amount of injection from the first and second injector with operating conditions, when said variation causes said first injector to approach a first minimum opening condition, increasing injection of said second injector and disabling said first injector, and when said variation causes said second injector to approach a second minimum opening condition, avoiding further reduction of said second injector and decreasing injection of said first injector.
摘要:
A method for controlling valves during an engine stop is presented. The valves are controlled in a manner that can quiet the engine during a stop. In addition, the valves may be selectively controlled to direct the contents of the cylinder in a desired direction so that engine emissions may be reduced.