High efficiency eight stroke internal combustion engine
OwnerPhilip Owen Junginventor
Life of this patent
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Abstract
A method and a system for operating an eight-stroke internal combustion engine having higher thermal efficiency than a four-stroke engine is disclosed. The strokes comprise intake (FIG. 1), compression (FIG. 2), combustion for a first power stroke (FIG. 3), exhaust (FIG. 4), vapor or water injection for a second power stroke (FIG. 5), exhaust (FIG. 6), vapor injection for a third power stroke (FIG. 7), and exhaust (FIG. 8). Heat from each exhaust is recovered and recycled to a subsequent stroke. Consequently, an engine with much higher thermal efficiency and thus lower fuel consumption is achieved.
Claims18
A method of operating an internal combustion engine having at least one cylinder, said method comprising the steps of:
- inducting air into the cylinder of said engine,
- compressing said air in a compression stroke inside a combustion chamber,
- a means of adding fuel to said air followed by combustion of the fuel and air mixture in said combustion chamber resulting in a first power stroke of said engine,
- exhausting the combusted mixture of fuel and air into a vaporizer,
- injecting hot water from said vaporizer into said combustion chamber which converts to a first portion of steam resulting in a second power stroke,
- exhausting said first portion of steam into a heat recovery exchanger,
- admitting a second portion of steam from the steam chest of said vaporizer into said combustion chamber from an adjacent steam chamber resulting in a third power stroke,
- exhausting said second portion of steam into said heat recovery exchanger.
A method of operating an internal combustion engine having at least one cylinder, said method comprising the steps of:
- inducting air into the cylinder of said engine,
- compressing said air in a compression stroke inside a combustion chamber,
- a means of adding fuel to said air followed by combustion of the fuel and air mixture in said combustion chamber resulting in a first power stroke of said engine,
- exhausting the combusted mixture of fuel and air into a vaporizer,
- admitting a first portion of steam from the steam chest of said vaporizer into said combustion chamber from an adjacent steam chamber resulting in a second power stroke,
- exhausting said first portion of steam into a heat recovery exchanger,
- admitting a second portion of steam from said steam chest of said vaporizer into said combustion chamber from said adjacent steam chamber resulting in a third power stroke,
- exhausting said second portion of steam into said heat recovery exchanger.
A method of operating an internal combustion engine having at least one cylinder, said method comprising the steps of:
- inducting air into the cylinder of said engine,
- compressing said air in a compression stroke inside a combustion chamber,
- a means of adding fuel to said air followed by combustion of the fuel and air mixture in said combustion chamber resulting in a first power stroke of said engine,
- exhausting the combusted mixture of fuel and air into a vaporizer,
- admitting a first portion of steam from the steam chest of said vaporizer into said combustion chamber from an adjacent primary steam chamber resulting in a second power stroke,
- exhausting said first portion of steam into a heat recovery exchanger,
- admitting a second portion of steam from said steam chest of said vaporizer into said combustion chamber from an adjacent secondary steam chamber resulting in a third power stroke,
- exhausting said second portion of steam into said heat recovery exchanger.
Dependencies are inferred from the claim text.