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"That’s an amazing invention, but who would ever want to use one of them?"
President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 6708666 | Multi-zone combustion chamber for combustion rate shaping and emissions control in premixed-charge combustion engines An apparatus and method for improving efficiency of combustion engines. At least two combustion chambers are provided by contouring the surface of a piston or a cylinder head or a combination thereof. Such a contoured piston or cylinder head controls the peak temper... | 03/23/2004 |
| 6647950 | Fuel-injected internal combustion engine with reduced squish factor A direct fuel injection internal combustion engine configured to reduce engine knock during high speed operation of the engine is provided. The engine comprises a cylinder head including a lower surface portion closing an upper end of a cylinder to define... | 11/18/2003 |
| 6435159 | Fuel injected internal combustion engine with reduced squish factor A direct fuel injection internal combustion engine configured to reduce engine knock during high speed operation of the engine is provided. The engine comprises a cylinder head including a lower surface portion closing an upper end of a cylinder to define... | 08/20/2002 |
| 6314937 | Internal combustion engine and method for controlling the production of oxides of nitrogen A diesel locomotive engine (10) having a combustion chamber (30) formed into the cylinder head (16) to have a diameter (D2) greater than the diameter (D1) of the cylinder liner (14). A piston (20) is disposed for reciprocating motion... | 11/13/2001 |
| 5934262 | Combustion chamber for internal combustion engine A combustion chamber in a reciprocating-piston internal combustion engine having at least one inlet duct and at least one outlet duct is formed by a cylinder head and piston each having respective annular squish surfaces for acceleration of fresh gases. A... | 08/10/1999 |
| 5727535 | Hemispherical piston combustion chamber apparatus In an internal combustion engine, a piston/cylinder arrangement includes a hemispherical combustion chamber formed either in a piston crown secured to a top of the piston or in the piston head itself. This hemispherical combustion chamber occupies substan... | 03/17/1998 |
| 5492092 | Snow mobile engine head The invention in a snow mobile engine head is formed, as by milling methods, from an aluminum billet and includes spaced bolt bosses extending at spaced intervals from around the head perimeter, each of which bolt bosses includes a hole formed therethroug... | 02/20/1996 |
| 4881513 | Two-cycle internal combustion engine A two-cycle internal combustion engine capable of improving its output and a rate of feed consumption. In the engine, an ignition plug is so disposed that its tip end is arranged in a top chamber and positioned on a vertical plane extending through the to... | 11/21/1989 |
| 4719880 | Two stroke cycle internal combustion engines A direct injected two stroke cycle internal combustion engine having a cylinder, a cylinder head at one end of the cylinder, a piston mounted for reciprocation in the cylinder, and an inlet port and an exhaust port in the wall of the cylinder at substanti... | 01/19/1988 |
| 4706622 | Engine combustion chamber construction A mixture-compressing spark-ignited four-stroke internal combustion engine having a combustion chamber bounded by the piston and the cylinder head, and inlet and exhaust valves, the valve openings of which are offset in plan view in the longitudinal direc... | 11/17/1987 |
| 4452221 | High squish dual swirl engine combustion chamber A high efficiency high ratio dual swirl combustion chamber of a spark ignition internal combustion engine includes in preferred embodiment opposing closely conforming squish surfaces with an eight (8) shaped subchamber recess formed of adjoining subcylind... | 06/05/1984 |
| 4445467 | Two-cycle stratified charge gas engine A two-cycle, gas-powered engine which is capable of operating over a wide range of loads including those (e.g. idle speed) which have previously caused misfirings in known engines of this type. A specially constructed head and piston assembly and a govern... | 05/01/1984 |
| 4182280 | Vortex automotive combustion engine A spark ignition internal combustion engine is provided with a symmetric open torus combustion chamber at the end of a cylinder with a coaxial inlet for intake of fuel air mixture into the chamber and a coaxial outlet communicating with the upper end of a... | 01/08/1980 |
| 3933143 | Combustion chamber protection means A combustion engine with a piston forming the combustion chamber, means for protecting the edge of the opening of the combustion chamber against cracks being arranged so that they only take effect in the peripheral zones of the edge which are adjacent the... | 01/20/1976 |
