Loading patent…
AssigneePC/Rc Products, L.L.C.
InventorsJames T. Bellistri, Mazen J. Hajji, Nagesh S. Mavinahally, David R. Brower
Estimating the term…
A low pressure, low cost electronic fuel injection system (18) for small hand-held two cycle engines (1) is provided which employs a number of improvements, including by way of example and not of limitation, an improved low cost injector construction (45), a throttle body integration (10) that includes mounting the operational components of the supply system on a single unit, an improved ignition module (40), a pressure regulated fuel system controlled by an electronic control unit (42) employing and an adaptive algorithm based on engine speed which controls the speed by varying the amount of fuel provided to the engine.
A fuel system (18) for an internal combustion engine including an engine block (12), at least one combustion chamber (14) associated with the engine block, at least one piston (11) mounted for movement within the chamber (14), a shaft (7) driven by the at least one piston (11), and a flywheel (2) mounted to and rotatable with the shaft;
In a fuel system (18) for a small internal combustion engine having an engine block (12), at least one combustion chamber (14) associated with the engine block (12), at least one piston (11) mounted for movement within the at least one chamber (14), a shaft (7) driven by the at least one piston (11), a flywheel (2) mounted to and rotatable with the shaft (7) and at least on fuel injector (45) associated with the engine (1), the improvement which comprises a throttle body (10) mounted to the engine (1), and a fuel pump (84b) integral with the throttle body (10), the throttle body (10) having a fuel circuit (10a) associated with it for delivering fuel to the at least one fuel injector (45).
In a fuel system (18) for a internal combustion engine (1) having an engine block (12), at least one cylinder (15) associated with the engine (1), at least one piston (11) mounted for movement within the cylinder (15), a shaft (7) driven by the at least one piston (11), a flywheel (2) mounted to the shaft (7) and a fuel circuit (10a) for supplying fuel to the cylinder (15), the improvement which comprises a fuel injector (45) capable of delivering fuel in less than 4 ms at an engine speed of less than 12,500 revolutions per minute, the fuel injector (45) further including a motor can (30) enclosing a magnetic core (34), an electrical coil (43) mounted to the core (34), an upper body (25) sized to receive the motor can (30), a lower body (33) having an inlet (34) operatively connected to the fuel circuit and an outlet (105) operatively connected to the at least one cylinder (15), the lower body (33) being mounted to and fixed in position to the upper body (25) in the assembled position of the injector (45), a spring (44) and pin (46) positioned between the lower body (33) and the motor can (30), the spring (44) acting on the pin (46) normally to position the pin (46) toward the outlet (105) of the lower body (33).
In a fuel system for a small internal combustion engine (1) having an engine block (12), at least one combustion chamber (14) associated with the engine (1), at least one piston (11) mounted for movement within the combustion chamber, a shaft (7) driven by the at least one piston (11), and a flywheel (2) mounted to the shaft (7), and at least one fuel injector (45), the improvement which comprises an electronic control unit (42), the electronic control unit (42) being operable to electrically control a fuel injector (45) for the fuel system (18), the electronic control (42) unit including a microprocessor (160), a non-volatile memory for a control algorithm, and signal conditioning circuits, the electronic control unit being mounted to a throttle body (10), and a throttle body mounted to the engine (1).
A fuel circuit for an internal combustion engine (1) comprising:
A method of adjusting the operational position of a fuel injector (45) for an internal combustion engine (1) comprising the steps of:
A throttle body (10) for an internal combustion engine comprising:
In a fuel system for a internal combustion engine having an engine block (12), at least one cylinder (15) associated with the engine, at least one piston (11) mounted for movement within the cylinder (15), a shaft (7) driven by the at least one piston, a flywheel (2) mounted to the shaft, the improvement which consists essentially of the integration of the components required to operate a fuel injection system (10a) into a throttle body (10), the throttle body (10) having a first plurality of parts associated with it, and an ignition module (40), the ignition module having a second plurality of parts associated with it, the ignition module (40) being operatively connected to the throttle body (10) for engine operation.
A method for starting a rope pull start internal combustion engine having a flywheel (2), a fuel injection system, an electronic control (42) unit for operating the fuel injection system, the electronic control unit (42) having a smart choke algorithm and a run algorithm associated with it, and an ignition module (40) for detecting rotation of the flywheel (2) comprising:
A method for starting a rope pull start internal combustion engine having a flywheel (2), a fuel injection system (10a), an electronic control unit (42) for operating the fuel injection system (10a), the electronic control (42) unit having a smart choke algorithm and a run algorithm and an ignition module (40) for detecting rotation of the flywheel (2) comprising;
A method of regulating fuel delivery in a fuel system (18) for operating an internal combustion engine, by changing fuel quantity available to the engine for maximizing engine efficiency at any rpm, load and throttle position, the engine including an engine block (12), at least one cylinder (15) associated with the engine, at least one piston (11) mounted for movement within the cylinder (15), a shaft (7) driven by the at least one piston (11) a flywheel (2) mounted to the shaft (7), a throttle body (10) having an electronic control unit (42) associated with it, and an ignition module (40), the ignition module being operatively arranged to detect rotation of the fly wheel (2) and being electrically connected to the electronic control unit (42), comprising the steps of:
A method of determining cycle recognition in an internal combustion engine, the engine including an engine block (12), at least one cylinder (15) associated with the engine, at least one piston (11) mounted for movement within the cylinder (15), a shaft (7) driven by the at least one piston (11), a flywheel (2) mounted to the shaft (7), a throttle body (10) having an electronic control unit (42) associated with it, and an ignition module (40), the ignition module being operatively arranged to detect rotation of the fly wheel (2) and being electrically connected to the electronic control unit (42), comprising the steps of:
A fuel system for a small internal combustion engine’ comprising:
A fuel system for a small internal combustion engine (1) having an engine block (12) at least one combustion chamber (14) associated with the engine block (12), at least one piston (11) mounted for movement in the chamber (14), a shaft (7) driven by said at least one piston (11), the engine (1) having a crankcase enclosing the shaft, whereby movement of the piston (11) causes varying pressure pulsations in the crankcase, comprising:
A fuel system for a internal combustion engine having an engine block (12), at least one cylinder (15) associated with the engine, at least one piston (11) mounted for movement within the cylinder (15), a shaft (7) driven by the at least one piston (11), a flywheel (2) mounted to the shaft (7), including the integration of the components required to operate the fuel system into two groups, which comprises:
An internal combustion engine, comprising:
Dependencies are inferred from the claim text.