A fuel injection supply system for an internal combustion engine provided with an even number more than four cylinders. The first intake manifold is connected to the first cylinder group comprising one half of the cylinders and the second intake manifold is connected to the second cylinder group comprising the other half of the cylinders. A passage collector member is provided which collects the intake passages so as to communicate the intake ports of the first and second manifolds each other, and the first fuel supply device is disposed at the converging portion of the first intake manifold and the second fuel supply device is disposed at the converging portion of the second intake manifold.
The device comprises substantially an integral connection block for connection to an air manifold and to an engine wall; in said block there is provided a plurality of pairs of main air feed holes, one hole of each pair being controlled by a throttle valve; in the block there is also provided a series of supplementary idling air ducts the passage of which is controlled by a solenoid modulating valve housed in a suitable seat in the block. On the block there is also provided a series of seats for the injectors, and a pair of ducts for feeding fuel to the injectors and for its recirculation. Finally, on the block there are provided further seats for a fuel pressure regulator and for a pneumatic actuator arranged to control said throttle valves by way of a transmission.
A fuel injection system for an internal combustion engine of a vehicle including a body having a first air channel and a second air channel formed therein, a fuel injection channel formed in the body, a first mixing chamber formed in the body between the fuel injection channel and one of the first and second air channels, a first valve means positioned in the first air channel for limiting a passage of air therethrough relative to movement of an accelerator of the vehicle, a second valve positioned in the fuel injection channel for limiting a passage of fuel relative to a movement of the accelerator, and a third valve positioned in the second air channel for limiting the flow of air/fuel therethrough relative to a movement of accelerator. The first air channel and the second air channel communicate with each other in the body. The first mixing chamber serves to mix fuel from the fuel injection channel with air from the second air channel. A plunger is positioned within the body adjacent the fuel injection channel so as to stop a flow of fuel through the fuel injection channel to the mixing chamber.
A liquid atomizer utilizes a plurality of laminated piezoelectric elements for converting electrical oscillation into mechanical vibration, a circuit for generating resonance frequency of a low DC voltage, the circuit being electrically connected to the piezoelectric elements and including a charging circuit for forcibly causing electric charge based on said DC resonance frequency voltage to flow from a DC power source into the laminated piezoelectric elements and a discharge circuit for forcibly causing electric charge stored in the laminated piezoelectric elements to be discharged.
An apparatus and method for cleaning the interior portions of an internal combustion engine includes an ultrasonic cleaning machine that supplies a heated cleaning solution to the engine or to a sub-system of the engine through a first adapter that connects to a first orifice of the engine, for example, to the oil filter port. A second adapter connects to a second orifice of the engine, for example, to the oil drain port, and includes an ultrasonic transducer. After the cleaning solution has been supplied to the engine, the ultrasonic transducer is energized for a predetermined period of time to impart ultrasonic energy to the cleaning solution in the engine to improve cleaning efficacy. When complete, the cleaning solution and adapters are removed from the engine. Then the proper fluid, for example, fresh motor oil is added along with a new oil filter.
A fuel control system for an engine has a fuel injector which injects fuel into an intake passage communicating with a combustion chamber. The quantity of a direct delivery part of fuel injected from the fuel injector which is directly fed to the combustion chamber is estimated, the quantity of a drawn part of fuel which has been on a wall surface of the intake passage and is vaporized and fed to the combustion chamber together with the direct delivery part is estimated, and the quantity of fuel to be injected from the fuel injection means is dcetermined on the basis of the estimated quantities of the direct delivery part and the drawn part so that the sum of them provides a desired quantity of fuel to be fed to the combustion chamber. The estimated quantity of at least one of the direct delivery part and the drawn part is increased as a factor which governs the degree of evaporation of the fuel on the wall surface changes in such a direction as to promote evaporation of the fuel on the wall surface.
