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US 12,025,067 B2Granted
Internal combustion engine
AssigneeInnio Jenbacher GmbH & Co OG
InventorsWolfgang Fimml, Nikolaus Spyra, Herbert Schaumberger, Matthias Raibel, Robert Boewing
Life of this patent
Estimating the term…
Abstract
An internal combustion engine includes transfer passages between a pre-chamber and a main combustion chamber, and a control unit configured to control a pre-chamber supply system coupled to the pre-chamber and a main combustion chamber supply system coupled to the main combustion chamber, wherein the control unit is configured to control the pre-chamber supply system such that a supply volume exceeds a volume of the pre-chamber and that a surplus of the supply volume is communicated to the main combustion chamber, such as during a transient operating condition.
Claims24
An internal combustion engine, comprising
- a main combustion chamber,
- a pre-chamber of smaller volume than the main combustion chamber,
- transfer passages which establish fluid communication between the pre-chamber and the main combustion chamber,
- a pre-chamber supply system equipped to supply a fuel or a first air-fuel mixture to the pre-chamber,
- a main combustion chamber supply system equipped to supply air or a second air fuel mixture to the main combustion chamber, and
- a control unit configured to closed or open loop control the pre-chamber supply system in order to supply the supply volume of the fuel or the first air-fuel mixture to the pre-chamber,
- wherein the control unit is configured to closed or open loop control the pre-chamber supply system, such that the supply volume exceeds the volume of the pre-chamber and that a surplus of the supply volume is communicated to the main combustion chamber through the transfer passages for mixing of the supply volume supplied to the pre-chamber with the air or the second air fuel mixture supplied to the main combustion chamber,
- wherein a set fuel energy amount (Ef) for combustion in the main combustion chamber is given and the control unit is configured to control the pre-chamber supply system such that
- a first fuel energy amount (E1) pertaining to the surplus of the supply volume communicated to the main combustion chamber and
- a second fuel energy amount (E2) pertaining to the air or second air fuel mixture supplied to the main combustion chamber
- add up to the set fuel energy amount (Ef).
8 more elements
A method for operating an internal combustion engine, comprising:
- supplying a supply volume of a fuel or a first air fuel mixture to a pre-chamber of the internal combustion engine, which supply volume exceeds a volume of the pre-chamber;
- supplying air or a second air fuel mixture to a main combustion chamber of the internal combustion engine;
- communicating a surplus of the supply volume to the main combustion chamber through one or more transfer passages between the pre-chamber and the main combustion chamber;
- mixing the surplus of the supply volume with the air or the second air fuel mixture in the main combustion chamber;
- and
- setting a set fuel energy amount (Ef) for combustion in the main combustion chamber and controlling a pre-chamber supply system such that
- a first fuel energy amount (E1) pertaining to the surplus of the supply volume communicated to the main combustion chamber and
- a second fuel energy amount (E2) pertaining to the air or second air fuel mixture supplied to the main combustion chamber
- add up to the set fuel energy amount (Ef).
6 more elements
An internal combustion engine, comprising
- a main combustion chamber,
- a pre-chamber of smaller volume than the main combustion chamber,
- transfer passages which establish fluid communication between the pre-chamber and the main combustion chamber,
- a pre-chamber supply system equipped to supply a fuel or a first air-fuel mixture to the pre- chamber,
- a main combustion chamber supply system equipped to supply air or a second air fuel mixture to the main combustion chamber, and
- a control unit configured to closed or open loop control the pre-chamber supply system in order to supply the supply volume of the fuel or the first air-fuel mixture to the pre-chamber,
- wherein the control unit is configured to closed or open loop control the pre-chamber supply system, such that the supply volume exceeds the volume of the pre-chamber and that a surplus of the supply volume is communicated to the main combustion chamber through the transfer passages for mixing of the supply volume supplied to the pre-chamber with the air or the second air fuel mixture supplied to the main combustion chamber, at least during a transient operation condition,
- wherein the control unit is configured to vary the surplus of the supply volume communicated to the main combustion chamber at least during the transient operating condition.
5 more elements
Dependencies are inferred from the claim text.