Engine starting system
AssigneeFord Motor Company
InventorDante S. Giardini
Life of this patent
Estimating the term…
Abstract
An engine starting system for a four-cylinder internal combustion engine includes an electric fuel pump connected to fuel injection valves mounted within each cylinder of the engine, an electric blower for blowing air into the cylinders to increase the air pressure above atmospheric levels within a cylinder housing a piston in the intake stroke mode, glow plugs mounted within each cylinder to ignite the fuel fed through the injection valves, and an intake valve which is normally open when a piston is in its intake stroke mode. The intake valve is constructed to close when a predetermined high pressure is within a cylinder to trap explosive pressure of the ignited fuel within the cylinder to drive the piston when it is in its intake stroke mode such that the engine is started solely by explosive power within said cylinders.
Claims21
A method of starting an internal combustion engine having a chamber and driving member moveable therein comprising the steps of:
- feeding fuel into said chamber when said driving member is stationary to create a fuel and air mixture;
- igniting said fuel and air mixture contained in said chamber when said driving member is stationary;
- and
- trapping the explosive pressure of said ignited fuel and air mixture in said chamber to power said driving member thereby commencing motion of the engine solely by said explosive pressure;
- wherein:
- said internal combustion engine is a four-stroke reciprocating engine with a multiple number of chambers that comprise cylinders;
- said driving member comprises a piston housed in each cylinder;
- each piston has an intake, compression, power or exhaust stroke mode;
- and
- said trapping of the explosive pressure occurs when said pistons are in said power and intake stroke modes.
An engine starting system for an engine having a combustion chamber defined in part by a piston and an intake valve means arranged in an intake stroke mode;
- feed means constructed to feed fuel into said combustion chamber when said piston is stationary and said intake valve means is open;
- ignition means constructed to ignite said fuel in said combustion chamber when said piston is stationary and said intake valve means is open;
- said intake valve means being constructed to move to a closed position when said fuel is ignited whereby the gas pressure within said combustion chamber is increased and said piston is urged in the direction of a power stroke by said gas pressure.
an engine starting system for a multi-cylinder internal combustion engine having cylinders and pistons that are in intake and power stroke modes;
- said starting system being characterized by:
- feed means for feeding fuel only to said cylinders having piston in intake and power stroke modes to create a fuel and air mixture therein;
- ignition means to ignite said fuel and air contained within said cylinders;
- enclosing means to trap explosive pressure of said ignited fuel and air in said cylinders to move said pistons when said pistons are in said power stroke mode and said intake stroke mode.
An engine starting system for a multi-cylinder four-stroke internal combustion engine having cylinders and pistons that are in intake and power stroke modes;
- said starting system being characterized by:
- feed means for feeding fuel into both of said cylinders simultaneously to create fuel and air mixture therein;
- ignition means to ignite said fuel and air mixture contained within said cylinders;
- and
- enclosing means to trap the explosive pressure of said ignited fuel in said cylinders to move both of said pistons.
Dependencies are inferred from the claim text.