摘要:
In certain embodiments, there is provided a method of operating a turbocharged system including injecting a first quantity of fuel into an engine cylinder at a first predetermined time during a second half of a compression stroke before a piston of the engine cylinder reaches top dead center of the compression stroke. The method further includes injecting a second quantity of fuel into the engine cylinder at a second predetermined time after the first predetermined time when the piston is advanced by a predetermined advance value before the piston reaches the top dead center of the compression stroke.
摘要:
System and method for supplying reductants to an emission treatment system. The system includes a fuel tank adapted to supply a premixed fuel stream that includes a primary component and a reductant component, and an engine in fluid communication with the fuel tank, wherein the engine is configured to create an emission. The engine includes an emission treatment system to treat the emission. The system also includes a separation system that includes a membrane with differential permeability for the reductant component relative to the primary component. The separation system is configured to receive at least a portion of the premixed fuel stream from the tank and to separate the premixed fuel stream into a first fraction and a second fraction. The first fraction includes a higher concentration of the reductant component than the second fraction, and the separation system is configured to supply the first fraction to the emission treatment system.
摘要:
A regenerative fuel cell is combined with a combustion engine such as a Pulse Detonation Engine (PDE) to create a closed-loop power generation system. Stored hydrogen and oxygen are used by the regenerative fuel cell, and by the combustion engine, in which the reaction of the hydrogen and oxygen produces water in the gas phase (steam). The steam is used to generate work from a turbine shaft, which is used to drive a propulsion system for the marine vessel. After the steam passes through the turbine, the steam is cooled back to liquid water by a condenser, and stored with the water produced by the regenerative fuel cell. The stored water can be converted back into hydrogen and oxygen by using electrical power external to the closed-loop system. After regeneration of the water into hydrogen and oxygen, the closed-loop power system would be ready for operation again.
摘要:
The present invention provides a central core element for a separator assembly comprising at least two porous exhaust conduits; each porous exhaust conduit defining an exhaust channel and one or more openings allowing fluid communication between an exterior surface of the porous exhaust conduit and the exhaust channel, said porous exhaust conduits independently defining a cavity between said porous exhaust conduits, said cavity being configured to accommodate a first portion of a membrane stack assembly. In another aspect, the present invention provides a central core element for a separator assembly comprising at least two identical core element components, each of said core element components comprising at least one porous exhaust conduit and at least one friction coupling, said friction couplings being configured to join said core element components to form a central core element defining a cavity configured to accommodate a first portion of a membrane stack assembly.
摘要:
The present invention provides a central core element for separator assemblies useful in the purification of fluids, for example separator assemblies useful for the desalination of seawater. The central core element provided by the present invention comprises at least two porous exhaust conduits wherein each porous exhaust conduit comprises an exhaust channel and one or more openings which allow fluid communication between an exterior surface of the porous exhaust conduit and the exhaust channel. The central core element defines a cavity into which may be disposed a first portion of a membrane stack assembly. In the preparation of a separator assembly comprising the central core element provided by the present invention, a second portion of the membrane stack assembly forms a multilayer membrane assembly disposed around the central core element. Also provided are central core elements for salt separator assemblies and spiral flow reverse osmosis devices.
摘要:
Ignition of a main fuel in an internal combustion engine having at least one cylinder having a combustion chamber is accomplished by diverting a portion of the main fuel to a processing system; processing said portion of the main fuel to increase ignition sensitivity thereof and form a pilot fuel; introducing the main fuel into the combustion chamber; and introducing said pilot fuel to control ignition of the main fuel.
摘要:
An apparatus for reducing emissions of a combustion engine is disclosed, the apparatus comprising: an energy converter adapted to convert mechanical energy to electrical energy, but having no mechanical coupling to any drive shaft of the combustion engine; and an exhaust aftertreatment device adapted to receive the electrical energy from the energy converter, receive exhaust gases from the combustion engine, and remove pollutants from the exhaust gases.
摘要:
A separator assembly is provided comprising a membrane stack assembly comprising a feed carrier layer, a permeate carrier layer, and a membrane layer, and a central core element comprising a concentrate exhaust conduit and a permeate exhaust conduit; wherein the concentrate exhaust conduit and the permeate exhaust conduit are separated by a first portion of the membrane stack assembly; and wherein a second portion of the membrane stack assembly forms a multilayer membrane assembly disposed around the central core element; and wherein the feed carrier layer is in contact with the concentrate exhaust conduit and not in contact with the permeate exhaust conduit; and wherein the permeate carrier layer is in contact with the permeate exhaust conduit and not in contact with the concentrate exhaust conduit; and wherein the permeate carrier layer does not form an outer surface of the separator assembly.
摘要:
The present invention provides a separator assembly comprising a central core element comprising at least two permeate exhaust conduits and not comprising a concentrate exhaust conduit; and a membrane stack assembly comprising at least one feed carrier layer, at least two permeate carrier layers, and at least two membrane layers, the membrane layers being disposed between the feed carrier layer and the permeate carrier layers; wherein the permeate exhaust conduits are separated by a first portion of the membrane stack assembly, and wherein a second portion of the membrane stack assembly forms a multilayer membrane assembly disposed around the central core element, and wherein the feed carrier layer is not in contact with a permeate exhaust conduit, and wherein the permeate carrier layers are in contact with at least one permeate exhaust conduit. Also provided are salt separator assemblies and spiral flow reverse osmosis devices.
摘要:
An MRI apparatus includes a MRI gradient coil and an MRI cooling system. The MRI cooling system is thermally connected to the MRI gradient coil and includes a cooling circuit. A chiller is connected to the cooling circuit and configured to pump a coolant through the cooling circuit and extract heat from the coolant. The coolant includes both a carrier fluid and a phase-change material.