摘要:
A reconfigurable exhaust system provides selective positioning of exhaust gas treatment devices either near, or spaced from, the exhaust gas outlet port of a turbine of a turbocharged Diesel engine. In some embodiments, auxiliary air or a heat exchanger are arranged to cool the exhaust gas when required.
摘要:
A method and system for containing escaping hydrocarbon fluid from a well pipe of a production well. Suppression of the hydrocarbon fluid to a level below the breach location using a control fluid allows the breach to be repaired through the installation of a containment sleeve at the location of the breach. After collecting the escaping hydrocarbon fluids with a containment sleeve, the hydrocarbon fluid is routed to a collection reservoir from which it may be easily recovered without causing environmental damage. This process occurs with minimal downtime of the production well with the added environmental benefit of remediation of earth contaminated by the hydrocarbon breach.
摘要:
A ornamental planting landscape irrigation distribution and reservoir product and method ecosystem employing a substantially continuous panel on the soil surface on which ornamental landscape plantings is placed or produced, the panel having a primary, lateral water distribution structure which distributes water from a water charging inlet through the lateral area to the panel periphery, where it is restrained, the primary water distribution structure being such that when filled with water or completely submerged in water air is trapped by the gaps and spaces of the material for ornamental landscape plant usage.
摘要:
A tactile metronome for use by a musician generally includes a signal generator for producing an electrical signal according to a desired timing scheme and a tactile transducer in electrical communication with the signal generator. The tactile transducer, which may take the form of a piezoelectric device, a buzzer, electrodes or any substantial equivalent, is adapted to impart a tactile sensation to the musician in response to the generated electrical signal. A strap, which may be formed from an elastic material or a soft cloth material with hook and loop fasteners, is provided to secure the tactile transducer in place on the musician's body.
摘要:
A reconfigurable exhaust system provides selective positioning of exhaust gas treatment devices either near, or spaced from, the exhaust gas outlet port of a turbine of a turbocharged Diesel engine. In some embodiments, auxiliary air or a heat exchanger are arranged to cool the exhaust gas when required.
摘要:
A heavy-duty flame propagation engine has control systems and exhaust aftertreatment systems adapted to provide ultra-low emissions relative to Diesel engines while achieving comparable fuel consumption at reduced emission levels. The control systems include exhaust gas circulation, variable valve actuation, cylinder deactivation, pilot fuel injection, high energy ignition systems and combinations thereof to provide substantially stoichiometric combustion conditions over an entire load range of the engine. In one embodiment, the engine has direct in-cylinder fuel injection, is adapted for lean air-fuel mixture operation, and includes an oxidation catalyst and a lean NOx adsorber.
摘要:
A portable electro-hydraulic test bed apparatus with analog control station and methodology for performing hands-on materials and components testing. A portable test bench is provided having a hydraulic pump and a reservoir of hydraulic oil. The pressurized hydraulic fluid flows through a pressure relief valve, filter, and ball valve to a servo control valve. The servo control valve controls the action of the hydraulic ram. Any return hydraulic fluid flows through check valve, filter, and heat exchanger back to the reservoir. The servo control valve with the hydraulic ram may be moved to the location where the test is to occur. Whenever the hydraulic ram is moved to a different location displacement interlock is also required. The hydraulic ram is anchored at one end and the test is performed on the test item with the other end of the ram. A displacement sensor is included to determine how much the test item is being displaced. In addition, a load cell is included to determine the load that is exerted on the test item. A portable analog control station is provided.
摘要:
An aqueous urea dosing system has a first tube through which the urea solution is conveyed to a small mixing chamber. Compressed air is continuously conveyed through an annular space between the outer surface of the first tube and the inner surface of a second tube which has a distal end that extends beyond a distal end of the first tube. The mixing chamber is positioned between the respective distal ends of the first and second tubes. The urea solution is discharged into the small mixing chamber, and subsequently immediately into an exhaust gas, in a series of discreet pulses, the width and period of which are controlled by a pulse-width-modulated flow control valve spaced from the exhaust gas.
摘要:
A semi-permanent reference electrode for use in monitoring and measuring metals in field applications, such as cathodic protection. This electrode has an outer electrode body with a cap and porous plug. The outer electrode body is filled with a fill solution which is a saturated salt solution formed from a solid salt. The solid salt is hygroscopic with a low deliquescence point. An opening is provided in the cap to allow moisture into the outer electrode body to combine with the fill solution to maintain the saturated salt solution in the field. This saturated salt solution must maintain a constant pH for use in the semi-permanent reference electrode. A wire is used within the outer electrode body which connects to a voltmeter. This voltmeter measures the potential difference between the reference electrode and the field component of interest, which can include pipelines, storage tanks and bridges.
摘要:
A method for rapidly transitioning from a lean combustion mode to a rich combustion mode, such as often required for the regeneration of aftertreatment devices, is provided by abrupt intake air reduction and a concurrent abrupt increase in fuel injection quantity with accompanying retardation of fuel injection timing. The abrupt increase in fuel quantity is to a maximum value sufficient to immediately provide a defined initial rich air/fuel ratio for a coexistent oxygen concentration in the cylinder. The fuel quantity is then proportionally reduced from the maximum value to a target fuel quantity to maintain a target air/fuel ratio during the transition. Simultaneously, injection timing is abruptly retarded to a value sufficient to avoid torque increase as a result of the increased injected fuel. The injection timing is subsequently proportionally advanced from the abruptly retarded timing value when the target fuel quantity and air/fuel ratio values are achieved.