TH31685B - Electronically controlled fuel injection devices? - Google Patents

Abstract

DC60 (30/07/45) The purpose of this invention is to provide an electronically controlled fuel injection device suitable for use in engines mounted in two-wheeled vehicles or similar vehicles. The device of this invention consists of a small piston 21, which is driven by an electromagnetic force to pressurize the piston to feed fuel and return the fuel by suction; cylinder body 22 to 24, which houses the small piston 21 and is bounded to the pressurized chamber C; fuel supply path 29a; first valve 30, which allows fuel to flow into the pressurized chamber; return path 28a; recirculation path 32a, which has a recirculation opening 24c on the side surface of cylinder body 24 to recirculate fuel within the pressurized chamber C into the return path 28c; second valve 31, which is placed in the area Adjacent to the recirculation opening 24c and nozzle 50, small piston 21 opens the recirculation opening 24c in the initial region of the pressure feed stroke and closes it in the subsequent region of the pressure feed stroke. As a result, vapors are eliminated, and fuel injection can be achieved solely through the back-and-forth movement of small piston 21. The purpose of this invention is to provide an electronically controlled fuel injection device suitable for use in engines mounted on two-wheeled vehicles or similar structures. The device of this invention consists of small piston 21, driven by an electromagnetic force to provide pressure fuel feeding and suction fuel return; cylinder body 22 to 24, which encloses small piston 21 and delineates the pressure feed chamber C; fuel supply path 29a; first valve body 30, which allows fuel to flow into the pressure feed chamber; return path 28a; and recirculation path 32a, which contains the opening. For recirculation 24c in the side surface of cylinder 24 to recirculate fuel within the chamber, which is fed under pressure C into the return path 28c, a second valve 31, which is placed near the 24c recirculation opening and injector 50, small piston 21 opens the 24c recirculation opening at the beginning of the pressure feed stroke and closes the 24c recirculation opening in the next part of the pressure feed stroke. As a result, vapor is eliminated and fuel can be injected evenly through the back-and-forth movement of small piston 21.

Claims (8)

1. an electronically regulated fuel injection device that inject fuel The engine intake port contains: - A small piston which is driven by electromagnetic force to allow fuel to be fed. Pressure and recovery of the fuel by suction by a back-and-forth movement; - A cylinder that holds a small piston so that the small piston can slide. Independently and boundaries to the pressure-fed chamber; - a fuel supply path which can be connected to the chamber where such pressure is fed; - The first flap that allows fuel within the fuel supply path to flow into the A chamber that is fed by such pressure; - the return path, which will return a part of the fuel to the original fuel point; -Circulation path, which has openings for circulation in the side surface of the body. A cylinder to circulate the fuel inside the pressure-fed chamber into the transmission path. Such return; - a second valve, which is placed in close proximity to the recirculation opening To provide fuel of a specified pressure or greater that is inside the pressure feed chamber Can flow from the chamber into the said revolving path and - The nozzle is positioned on the end of the line of the pressure-fed chamber. Such and inject the fuel that is fed by pressure which is present at a specified pressure or greater; Where the small piston is formed in such a way that the recirculation opening It opens in the primal area of the pressure feeding and to provide a recirculation opening. It was closed in the next area other than the original area. (Of the stroke of pressure feeding), 2. Electronically regulated fuel injection devices in accordance with claim 1, where the discharge opening of the aforementioned fuel route is arranged in the lateral surface of the cylinder body. And the first valve is located in close proximity to the said dispensing opening. 3. Electronically regulated fuel injection device in accordance with claim 2, where such a recirculation opening is positioned near the starting side of the pressure feed stroke. It is more than the opening for such pay. 4. Electronically regulated fuel injection devices in accordance with claim 1, where indirect paths that carry fuel from the fuel supply path into the return path are installed around the cylinder. And making such a circulation route Connected to this detour as well. 5. Electronically regulated fuel injection device in accordance with claim 1, where such revolving opening is positioned in the upper region in the vertical direction. Considering the pressure-fed chamber. 6. Electronically regulated fuel injection devices in accordance with claim 4, where such fuel paths have been developed to stretch in a direction characterized by Most of them are perpendicular to the direction of movement of the small piston. The repatriation path is designed to stretch in the direction of return motion. Back of the said small piston and facing upwards and The detour is arranged in a ring shape so that it surrounds the cylinder. 7. Electronically regulated fuel injection device in accordance with claim 1, where the vapor separation filter is removed. Which will separate the vapor mixed into the fuel to be installed in the area It is close to the first tongue on the side of the trunk of the first tongue. 8. Electronically regulated fuel injection devices in accordance with claim 1, wherein the injectors have an air supply path to supply air for the purpose of fueling the injected fuel. Become a mist.