How to Fuel efficiency?

Internal combustion engine control for improved fuel efficiency,Induction motor-permanent magnet generator tandem configuration starter-generator for hybrid vehicles,System and method for dynamic aeroelastic control,Hydrogen on demand electrolysis fuel cell system,Oiling bucket with illuminating function

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6 results about "Fuel efficiency" patented technology

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Fuel efficiency is a form of thermal efficiency, meaning the ratio from effort to result of a process that converts chemical potential energy contained in a carrier (fuel) into kinetic energy or work. Overall fuel efficiency may vary per device, which in turn may vary per application fuel efficiency, especially fossil fuel power plants or industries dealing with combustion, such as ammonia production during the Haber process.

Internal combustion engine control for improved fuel efficiency

ActiveUS20100006065A1Undesirable vibration reductionImprove efficiencyAnalogue computers for vehiclesElectrical controlWork cycleFuel efficiency

A variety of methods and arrangements for improving the fuel efficiency of internal combustion engines are described. Generally, an engine is controlled to operate in a skip fire variable displacement mode. Feedback control is used to dynamically determine the working cycles to be skipped to provide a desired engine output. In some embodiments a substantially optimized amount of air and fuel is delivered to the working chambers during active working cycles so that the fired working chambers can operate at efficiencies close to their optimal efficiency. In some embodiments, the appropriate firing pattern is determined at least in part using predictive adaptive control. By way of example, sigma delta controllers work well for this purpose. In some implementations, the feedback includes feedback indicative of at least one of actual and requested working cycle firings. In some embodiments, the appropriate firings are determined on a firing opportunity by firing opportunity basis. Additionally, in some embodiments, an indicia of the current rotational speed of the engine is used as a clock input for a controller used to selectively cause the skipped working cycles to be skipped.

Owner:TULA TECH INC

Induction motor-permanent magnet generator tandem configuration starter-generator for hybrid vehicles

ActiveUS20140045648A1Improve fuel efficiencyGreat tractionHybrid vehiclesPower operated startersStarter generatorFuel efficiency

Disclosed in the present invention is a tandem starter-generator construction that includes an induction motor-generator, a permanent magnet motor-generator and power transmission unit disposed adjacent to the motor-generators. The induction motor-generator is utilized predominantly as a motor to provide mechanical power at relatively high efficiency as a motor, and as a generator to provide electrical power during regenerative braking. The permanent magnet motor-generator is used predominantly as a generator for very high efficiency power conversion and to capture additional electrical power during regenerative braking to compensates for the regenerative energy captured at lower efficiency by the induction motor-generator. Accordingly, the tandem motor-generator construction disclosed herein overcomes the drawbacks of low efficiency of an induction motor-generator operating in regenerative mode and a permanent magnet motor-generator magnetic drag losses during periods of non-utilization at high speeds in order to improve fuel efficiency of a parallel hybrid vehicle.

Induction motor-permanent magnet generator tandem configuration starter-generator for hybrid vehicles

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Owner:ALTIGREEN PROPULSION LABS

System and method for dynamic aeroelastic control

ActiveUS9073623B1Drag minimizationMaximize fuel efficiencyDetection of fluid at leakage pointPhase-affecting property measurementsSensor arrayStructural monitoring

The present invention proposes a hardware and software architecture for dynamic modal structural monitoring that uses a robust modal filter to monitor a potentially very large-scale array of sensors in real time, and tolerant of asymmetric sensor noise and sensor failures, to achieve aircraft performance optimization such as minimizing aircraft flutter, drag and maximizing fuel efficiency.

System and method for dynamic aeroelastic control

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Owner:NASA

Hydrogen on demand electrolysis fuel cell system

InactiveUS20140262819A1Improve fuel economyEmission reductionCellsPhotography auxillary processesElectrolysisHydrogen

A hydrogen and oxygen (HHO) gas on-demand electrolysis fuel cell system for use with internal combustion engines is disclosed. This hydrogen on-demand (HOD) system integrates with the engine control module (ECM) or other control system that regulates the operation of an internal combustion engine in order to supply HHO to the engine and improve the engine's overall fuel efficiency. This system includes an electrolyte fluid reservoir outfitted with level, pressure and temperature sensors; a pump and heat exchanger; a uniquely-configured electrolyzer; and a filter. The combined engine and HOD system is controlled and regulated by an electronic control system (ECS) and a combustion control module (CCM). The CCM is installed on the engine such that it actively intercepts the electronic signals from the engine manufacturer's ECM to continuously coordinate the functions and operations of the HOD system and the engine.

Owner:NRG LOGISTICS