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US 5,454,356 AGranted
Engine with pre-chamber
AssigneeIsuzu Ceramics Research Institute Co., Ltd.
InventorHideo Kawamura
Life of this patent
Estimating the term…
Abstract
This combustion engine has a pre-chamber and main chamber connected by a connection passage opened and shut by a control valve, the control valve operates separately for two steps. The operation of this control valve uniformly mixes the air of the pre-chamber and the main chamber. Therefore, various fuels which contain the gas fuel are efficiently burnt.
Claims20
An engine with a pre-chamber comprising:
- a main chamber;
- a pre-chamber abutting said main chamber with a portion tapering towards a passage hole, said pre-chamber having a generally cylindrical shape;
- a barrier between said pre-chamber and said main chamber defining the passage hole;
- a control valve for opening and closing said passage hole;
- a driver for opening and closing said control valve;
- an injection nozzle for injecting fuel into said pre-chamber;
- control means for controlling said control valve such that the control valve is in a closed position during the exhaust stroke and intake stroke and open during the last stage of the compression stroke;
- and
- means for controlling said injection nozzle for injecting a fuel into the pre-chamber during the exhaust stroke wherein, the passage hole is opened by the increased pressure in the cylinder during the compression stroke.
6 more elements
An engine with a pre-chamber comprising:
- a main chamber;
- a pre-chamber;
- a barrier installed between said pre-chamber and said main chamber defining a passage hole;
- a control valve located in said passage hole;
- a driver for opening and closing said control valve;
- an injection nozzle for injecting fuel into said pre-chamber;
- control means for operating said driver such that said control valve is in a closed position during the exhaust stroke and intake stroke and open during the last stage of the compression stroke;
- means for controlling said injection nozzle for injecting a fuel into the pre-chamber during the exhaust stroke;
- and
- at least one connection passage connecting the lower portion of the pre-chamber and the main chamber wherein said control means opens said connection passage during a first opening step and opens said passage hole and said connection hole during a second opening step.
7 more elements
An engine with a pre-chamber comprising:
- a main chamber;
- a pre-chamber;
- a barrier installed between said pre-chamber and said main chamber defining a passage hole;
- a control valve located in said passage hole;
- a driver for opening and closing said control valve;
- an injection nozzle for injecting fuel into said pre-chamber;
- control means for operating said driver such that said control valve is in a closed position during the exhaust stroke and intake stroke and open during the last stage of the compression stroke;
- means for controlling said injection nozzle for injecting a fuel into the pre-chamber during the exhaust stroke;
- wherein the force of said control means is overcome by the force of compressed air in the main chamber during the compression stroke of the engine.
6 more elements
Dependencies are inferred from the claim text.