165results about How to "Lower emission levels" patented technology

An embodiment of the present invention provides a method and system of operating a combustion system that has Lean direct injection (LDI) functionality. The method and system provides a passive cooling system for an injector of the LDI system. The method and system may also provide a means to direct the flow of the fluid exiting the injector of the LDI system.

A process is described that removes by oxidation the excess ammonia (NH3) gas from flue gases that have been subjected to selective catalytic reduction (SCR) of oxides of nitrogen (NOx) by ammonia injection. The inventive process incorporates a secondary catalyst of precious metal and vanadia on a metal oxide such as titania to catalyze the oxidation of both ammonia and carbon monoxide (CO) while maintaining sulfur dioxide (SO2) levels.

The invention relates to a method and a device for assisting a driver of a vehicle, said vehicle having an engine and a braking system, an accelerator that conveys the driver's wishes concerning acceleration to the engine, and a brake pedal that conveys the driver's wishes concerneing retardation to the braking system. In accordance with the method a speed profile is determined for the driving distance, which speed profile comprises a relation between a speed set point and position. Furthermore, the engine and the braking system are controlled on the basis of the speed profile and at least one actuator influences the accelerator or braking pedal of the vehicle in accordance with said control. The driver is permitted to override the influence of the actuator only if a force that is greater than a predetermined threshold value is applied on one of the pedals.

A fuel supply system and method thereof that utilizes an off-gas in addition to the primary fuel to lower the emissions of a gas turbine combustion system is disclosed. The fuel supply system apparatus comprises a fuel gas supply conduit and an off-gas supply conduit in fluid communication with the fuel gas supply conduit such that the flow of an off-gas to the fuel gas supply conduit can be regulated as required by the operator to the desired fuel nozzle(s). The fuel gas supply preferably operates with natural gas and the off-gas supply preferably comprises the constituents hydrogen and methane.

This disclosure provides systems, methods and apparatus for wirelessly transmitting power while avoiding interference with wireless communication devices. In one aspect a wireless power transmitter apparatus is provided. The wireless power transmitter apparatus includes a transmit circuit configured to wirelessly transmit power at a transmit frequency to a first receiver device. The wireless power transmitter apparatus further includes a controller circuit configured to reduce a level of emission of the transmit circuit at a determined frequency during a period of time based on information about an information signal transmitted to a second receiver device substantially at the determined frequency to be received within the period of time.

The present invention relates to electric control system for turbocharging of engine and the variable nozzle turbocharging control method and system features that in the electric control system,target pressure value is obtained through collecting the rotation speed, oil valve position, charging pressure and intake temperature of the engine and judging the working state of the engine. In the system, stepped motor as the executor is connected to the regulating crank of turbine nozzle ring via a link. During the transition course, the nozzle ring opening is regulated to some certain value by theexecutor through open-loop predication control; and while during stable state, closed-loop digital PID control has the charging pressure signal of intake manifold as controlled target.

A two-stroke engine having both a direct injector and an indirect injector. The direct injector injects fuel into the cylinder without passing through the crank case. The indirect injector is in fluid communication with the crank case. It provides fuel delivery through the crank case and through a transfer channel to the cylinder. A controller is coupled to the direct injector and to the indirect injector. The controller starts, stops, and varies the fuel delivery of each injector. The controller is programmed to increase the fuel delivery of the indirect injector at a predetermined engine speed. The controller maintains primary fuel flow through the direct injector below a predetermined engine speed. The controller varies the fuel delivery based on at least one of following: engine speed, throttle position, exhaust valve position, intake air temperature, exhaust temperature, barometric pressure, coolant water temperature, and piston position.

An embodiment of the present invention provides a method and system of operating a combustion system that has Lean direct injection (LDI) functionality. The method and system provides a passive cooling system for an injector of the LDI system. The method and system may also provide a means to direct the flow of the fluid exiting the injector of the LDI system.

The pH value of excess sludge taken out from a biological oxidation tank (2) is adjusted to 8 to 14, and the pH-adjusted sludge is injected into a solubilizing device (3). The sludge taken out from the solubilizing device (3) is heated to 110° C. to 350° C. at a pressure higher than saturated steam pressure to solubilize the sludge to a state readily degradable by microorganisms. The solubilized sludge is returned to a biological oxidizing tank (2), and the pH value of the sludge in the biological oxidizing tank (2) to 5 to 9. The use of the above method of treating excess sludge and an apparatus therefore enables substantially reducing the volume of excess sludge with economic advantage.

Described is an additional filter element for a filter apparatus for reducing emissions from a motor vehicle tank venting system. The additional filter element is connected to a main activated carbon filter and has adsorbents which, to achieve a high working capacity, in particular at 42° C., has a high micropore volume. To retain a residual loading possibly present in the micropores the adsorbents further have a mesopore volume. The micropore volume is at least 0.4 cm3 / g and the mesopore volume is at a maximum 0.95 cm3 / g.

Compressed air is fed from a pressurized reservoir (5) thru a nozzle / vortex unit (1) simultaneously drawing ambient air through an air filter element (10). The air mixes in a merging plenum (7) where air-charge multiplication occurs resulting in boost or positive pressure conditions. The positive pressure introduced to the intake air of the engine results in a higher cylinder combustion compression ratio. The increase compression ratio with proper air to fuel ratio results in an increase in horsepower and torque. Air is controlled by a computer (6), regulators, solenoids, micro-switches, and nozzle configurations. Air is supplied via reservoir (5) and replenished from mechanical or electric air pumps (FIG. 3 18s, 18b, 18c, 18d). Alternative fuels / gases can be added such as nitrous oxide or propane (3, 4). In diesel engine applications (FIG. 3), the power and torque increases can also be experienced, but also reduce emission levels at low rpm or idle mode conditions.

A method for enhancing the operation of an electrical power supply includes selecting a prime mover having a chosen power rating. An induction motor having a first power rating at a rated speed and a second power rating at an overspeed is chosen. The overspeed may be at least about 10%, or at least about 25%, 50%, 75%, 10 to 300%, 25 to 300%, or 50 to 100%, greater than the rated speed. The induction motor may be chosen so that the second power rating is substantially the same as the chosen power rating of the prime mover. The induction motor is driven by the prime mover so that the induction motor acts as an induction generator. The system may also comprise a control module to monitor the performance of the power supply and to provide a throttle control signal in response to a control parameter signal. A circuit input of a phase shift circuit may be connected to a generator output. A converter input of an AC to DC converter may be connected to a circuit output of the phase shift circuit. A reservoir input of an energy reservoir may be connected to a converter output of the AC to DC converter.

The invention discloses an highway variable speed limit and lane change cooperative control method under vehicle-road cooperation, and the method specifically comprises the steps: laying a road side unit, and dividing a highway section containing an entrance ramp into a plurality of control sections; predicting that traffic congestion will occur in the next period in the highway bottleneck area; controlling the speed of the vehicle on the entrance ramp in the current period; determining the critical density of the main line lane allowing convergence after convergence; judging whether the traffic density of each control road section on the highway main line in the next period is greater than the critical density of the main line lane allowing convergence after convergence or not; carrying out the variable speed limiting control and lane changing control on each control road section on the highway main line; issuing the control information to the vehicle-mounted prompting system, and regulating and controlling the flow flowing into the downstream. According to the invention, on the basis of real-time information sharing of vehicle-road cooperation, through cooperation of variable speed limit control and lane change control, the passing efficiency of the highway is improved, a large number of centralized lane change behaviors are reduced, and the risk of rear-end collision is reduced.