Multi-Stroke Internal Combustion Engine for Facilitation of Auto-Ignition Operation
First Claim
1. A method of operating an engine having at least one cylinder including an intake valve and an exhaust valve, the method comprising:
- injecting a first amount of fuel into the cylinder;
auto-igniting a first mixture of air and said first amount of fuel by compressing said first mixture;
injecting a second amount of fuel into the cylinder after auto-igniting said first mixture;
combusting a second mixture of said second amount of fuel and gasses from auto-ignition of said first mixture;
holding an intake valve of the cylinder closed between auto-igniting the first mixture and combusting the second mixture; and
exhausting said combusted second mixture.
2 Assignments
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Accused Products
Abstract
A method of operating an engine having at least one cylinder including an intake valve and an exhaust valve, the method comprising of injecting a first amount of fuel into the cylinder; auto-igniting a first mixture of air and said first amount of fuel by compressing said first mixture; injecting a second amount of fuel into the cylinder after auto-igniting said first mixture; combusting a second mixture of said second amount of fuel and gasses from auto-ignition of said first mixture; holding an intake valve of the cylinder closed between auto-igniting the first mixture and combusting the second mixture; and exhausting said combusted second mixture.
43 Citations
20 Claims
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1. A method of operating an engine having at least one cylinder including an intake valve and an exhaust valve, the method comprising:
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injecting a first amount of fuel into the cylinder; auto-igniting a first mixture of air and said first amount of fuel by compressing said first mixture; injecting a second amount of fuel into the cylinder after auto-igniting said first mixture; combusting a second mixture of said second amount of fuel and gasses from auto-ignition of said first mixture; holding an intake valve of the cylinder closed between auto-igniting the first mixture and combusting the second mixture; and exhausting said combusted second mixture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of controlling an exhaust stream produced by an internal combustion engine, said engine including at least one cylinder, the method comprising:
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operating the cylinder in a greater than four-stroke cycle including a first and a second combustion event; after a first combustion event of the cycle, exhausting a first quantum of gas from said cylinder; and after a second subsequent combustion event of the cycle, exhausting a second quantum of gas from said cylinder; wherein said first quantum of gas is less than said second quantum of gas and where said first quantum of gas includes a greater concentration oxygen than said second quantum of gas. - View Dependent Claims (14, 15)
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16. A method of operating an engine including at least one cylinder, comprising:
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admitting a gas containing oxygen into the cylinder; injecting a first amount of fuel into the cylinder; combusting a first substantially homogeneous mixture of said first amount of fuel and said gas by compressing said first mixture; injecting a second amount of fuel into the cylinder; and combusting a second substantially homogeneous mixture of said second amount of fuel and at least a portion of said gas by compressing said second mixture; wherein said first mixture includes a greater excess of oxygen than said second mixture. - View Dependent Claims (17, 18, 19, 20)
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Specification