Jet ignition engine with valve-carried ignition chamber
AssigneeGeneral Motors Corporation
InventorMing-Chih Yew
Life of this patent
Estimating the term…
Abstract
A jet ignition internal combustion engine of the type provided with separate induction passages for lean and rich air-fuel mixtures wherein the main inlet valve mounts a cup like member forming an auxiliary ignition chamber within the main combustion chamber. The rich mixture is supplied to the auxiliary chamber through the hollow stem of the main inlet valve, flow being controlled by a small auxiliary valve within the main valve and actuated by the same valve gear. Openings in the wall of the valve-carried ignition chamber connect with spark ignition means and with the main combustion chamber to provide for spark ignition of the rich ignition chamber mixture and resultant jet ignition of the lean mixture in the main combustion chamber.
Claims8
An internal combustion engine comprising
- means defining a variable volume main combustion chamber,
- a main inlet port to said chamber
- a main inlet valve closing said inlet port and operable to permit the entry of fluids to said main combustion chamber through said port,
- an auxiliary ignition chamber formed on the end of said main inlet valve and extending into said main combustion chamber, said auxiliary chamber being connected with said main chamber by at least one orifice in a wall thereof,
- an auxiliary inlet passage extending through said main inlet valve to said auxiliary chamber,
- an auxiliary inlet valve in said main inlet valve and operable to permit the entry of fluids to said auxiliary ignition chamber through said auxiliary inlet passage,
- means for cyclically opening and closing said inlet valves and
- means for igniting fluids in said ignition chamber for combustion therein, with resulting expansion through said orifice to ignite fluids in said main combustion chamber.
An internal combustion engine comprising
- means defining a closed-end cylinder,
- a piston reciprocably movable in said cylinder and defining therewith a variable volume main combustion chamber at said closed end,
- a main inlet port to said main chamber through the closed end of said cylinder,
- a main inlet valve closing said inlet port and operable to permit communication of said port with said main chamber, said valve having a head and a stem reciprocably movable in said cylinder defining means, said stem and head having an axial auxiliary inlet passage,
- wall means on the head of said main inlet valve and defining therewith an auxiliary ignition chamber within said main combustion chamber and connected therewith by at least one orifice, said auxiliary inlet passage connecting with said auxiliary ignition chamber,
- an auxiliary inlet valve reciprocably disposed in said main inlet valve and movable to open or close connection of said auxiliary inlet passage with said auxiliary ignition chamber
- means for igniting fluids in said ignition chamber for combustion therein with resulting expansion through said orifice to ignite fluids in said main combustion chamber, and
- valve actuating means including spring means biasing said valves in a closing direction and engine driven operating means, operable to cyclically open said valves and admit fluids from said main inlet port to said main combustion chamber and fluids from said auxiliary inlet passage to said auxiliary ignition chamber.
Dependencies are inferred from the claim text.