Abstract: A 3 fuel tank has a magnet 3 disposed on the inside or outside thereof in the vicinity of a fuel pump 12 which is housed inside the fuel tank. The magnet collects magnetic spatter which remains inside the fuel tank after welding and prevents the spatter from entering the fuel pump. The magnet may be a permanent magnet or an electromagnet, and it may be disposed outside the pump or in the fuel filter of the fuel pump. A cleaning method for a welded fuel tank comprises introducing a magnet into a fuel tank after welding, vibrating the fuel tank so that the magnet will move about the inside of the fuel tank and collect magnetic spatter, and then removing the magnet and spatter from the fuel tank.

Abstract: An arrangement for controlling fuel flow to an internal combustion engine includes a fuel-injection pump, a fuel tank, and a mechanically driven pre-supply pump for supplying fuel from the fuel tank to the suction space of the fuel injection pump. An electromagnetic control valve located downstream of the pre-supply pump and upstream of the suction space of the fuel injection pump moves between a supply position in which fuel flows from the pre-supply pump into the suction space, and a disconnect position. A mechanically driven additional suction supply pump communicates the suction space with the fuel tank in the disconnect position of the electromagnetic control valve. The electromagnetic control valve has throttle means for communicating the suction space of the fuel injection pump with the inlet of the additional suction supply pump in the disconnect position of the electromagnetic control valve.

Abstract: A heated fuel filter and water separator is disclosed. The assembly has a filter element mounted inside a fuel container. The fuel container has an upper chamber containing a filter element and a drainable lower chamber for collecting water and sediment. A heat exchanger circulates preheated fuel from a manifold return line to heat the filtered fuel in the container. The filter element utilizes helically wound aluminum strips as the filter media.

Abstract: An internal combustion engine comprises a combustion chamber and a crankcase which extends from the combustion chamber. A primary fuel delivery system introduces fuel from a fuel source into the combustion chamber, and a primer fuel delivery system is selectively operable for introducing fuel from the source into the combustion chamber in addition to fuel which is introduced by the primary fuel delivery system. A collector assembly communicates with the crankcase for accumulating residual fuel from the crankcase, and a residual fuel delivery system supplies fuel from the collector assembly into the combustion chamber. A control valve mechanism is connected to the primer fuel delivery system and the residual fuel delivery system for blocking the supply of fuel by the residual fuel delivery system during operation of the primer fuel delivery system.

Abstract: A fuel injection apparatus is proposed for mixture-compressing, externally ignited internal combustion engines which provides continuous injection into the intake manifold. An air flow rate member and an arbitrarily actuatable throttle valve are disposed in sequence within the intake manifold, the air flow rate member being moved against a return force in accordance with the quantity of air flowing therethrough and thereby adjusts the movable member of a metering and distribution valve assembly disposed within the fuel supply line for the purpose of apportioning a quantity of fuel which is proportional to the air quantity. The control slide of the metering valve is actuated by means of a spring which moves in a direction to open the metering valve when the engine is being turned off.

Abstract: The invention relates to an injection internal combustion engine.The engine has a device for injecting fuel, preferably at high pressure, into the cylinder of cylinders, a device adjusting the injection advance in dependence on the load, and a controlled ignition device, the said engine being arranged to use a fuel other than a petroleum product, preferably an alcohol based product, and being characterized in that its dimensional characteristics are determined to supply a volumetric compression ratio between 12 and 20, preferably between 15 and 18 and in particular close to 16, and in that the device adjusting the injection advance is such that it supplies, at least for starting, a high value of advance, particularly of the order of 180.degree..

Abstract: An evaporative emission canister, for use with the fuel system for an internal combustion engine, includes a canister housing defined by a cylindrical outer wall, a closed lower end wall, an upper end wall and a cylindrical inner wall depending from the upper end wall. An air-vapor permeable support means is positioned within the housing above the lower end wall in abutment against the lower free end of the inner wall to define with the lower end wall an air chamber in flow communication with the atmosphere and to define with the outer wall and the inner wall, an outer canister chamber and an inner canister chamber, respectively, that contain fuel vapor adsorbing material. The inner canister chamber is connected by a fuel bowl vent valve so as to receive vapors emitted from the float bowl of the carburetor of the engine when the engine is not in operation and the outer canister chamber is connected to receive vapors emitted from the fuel in the fuel tank for the engine.

Abstract: Water initially contained in fuel tends to separate out and accumulate at certain relatively low points in an engine fuel system. Automatic purging means are provided to remove such water continuously or intermittently without relying on periodic corrective actions by an operator. Purging conduit means are provided to connect the low point of one or more fuel chambers in the fuel system with lower-pressure regions so that accumulated water and a very small amount of the total fuel flow is withdrawn. One purging conduit may communicate the base of the fuel filter housing with a low-pressure point in the engine air intake such as the inlet of a turbocharger. Another purging conduit may connect a low point of the high-pressure region of the fuel pumping chamber with the fuel tank.

Abstract: A fuel tank is provided in the middle of its floor with a vessel from which the fuel is withdrawn by a fuel pump. A plurality of upright baffles are spaced radially apart around the vessel and have edges turned toward the vessel and received in reinforcing ribs of a filter carried over the vessel and formed as a downwardly open cup. A fuel-recirculating pipe directs a stream of fuel backwardly in the direction of travel against the forward face of the filter cup.

Abstract: Apparatus and method for recovering fuel from the induction system of an internal combustion engine having a carburetor, comprising one or a plurality of collectors along the fuel path between the carburetor throttle valve and the inlet valves of the engine, the collectors being in the form of annular recesses in the walls of the ducts, which recesses act to trap fuel which flows back as a liquid condensed onto the inlet manifold pipes as a reaction to the closure of the associated inlet valve of the engine. Each collector is connected by a drainage systems of conduits via expansion tanks and a pump, to the petrol tank of the engine and/or to the inlet to the carburetor whereby fuel which condenses prior to being drawn into the engine can be recycled for vaporization thereby avoiding its entry into the engine as a liquid.