Water/fuel mixing system for a gasoline engine
AssigneeTurbodyne Systems, Inc.
InventorsAnatoly D. Mezheritsky, Edward M. Halimi
Life of this patent
Estimating the term…
Abstract
NOx emissions from gasoline engines are reduced by mixing water in the gasoline to reduce combustion temperatures. The water is dispersed in the gasoline as the gasoline is delivered to the cylinders. When the engine is not operating, the water separates from the gasoline and causes rusting. In accordance with this invention, the mixing of water into the gasoline is terminated before the engine is shut off so as to purge the system of the water/gasoline dispersion so that there no longer is water in the fuel supply system by the time the engine is stopped.
Claims36
A water/gasoline mixing system for a gasoline engine, comprising:
- a gasoline delivery system for delivering gasoline to a gasoline engine;
- a gasoline tank for storing gasoline, a pump for withdrawing gasoline from said tank and delivering gasoline through a gasoline line to said engine gasoline delivery system;
- a mixer connected to receive gasoline from said gasoline line, said mixer being connected to deliver liquid fuel to said gasoline delivery system;
- a water tank for storing water, a water line for delivering water from said water tank through the water line to said mixer, a valve in said water line to said mixer to stop flow of water to said mixer;
- and
- an engine controller, said engine controller being connected to said gasoline delivery system for delivering gasoline to the engine in accordance with engine demand, said engine controller also being connected to said water valve to terminate water flow to said mixer prior to engine shutdown so that said gasoline delivery system downstream of said mixer is purged of water by said pump for withdrawing gasoline before engine shutdown.
The method of operating a gasoline engine having a gasoline tank and a fuel delivery system for delivering fuel to the cylinders of the gasoline engine comprising the steps of:
- providing a water tank and means to supply water from said water tank;
- providing a water/gasoline mixer between the gasoline tank and the fuel delivery system;
- providing a flow of gasoline from the gasoline tank and a flow of water from the water tank;
- mixing the flow of water into the flow of gasolines and providing a water/gasoline mixed fuel for delivery to the fuel delivery system for combustion in the engine;
- and
- terminating the flow of water to the mixer before the stopping of the engine so that the water/gasoline mixed fuel between the mixer and the engine is purged by a flow of unmixed gasoline before the engine is stopped.
A water/gasoline supply system for a gasoline engine, comprising:
- a gasoline tank;
- a water tank;
- means for delivering a controlled flow of gasoline to the gasoline engine;
- a fuel pump and a gasoline conduit between the gasoline tank and the means for delivering a controlled flow of gasoline to the internal combustion engine;
- a water-gasoline mixer in the gasoline conduit;
- a water conduit and water valve between the gasoline-water mixer and the water tank;
- and
- a control for opening the water valve upon operation of the internal combustion engine and for closing the water valve prior to shutdown of the engine, permitting the fuel pump to purge the system of water.
Dependencies are inferred from the claim text.