Combustion chamber arrangements for rotary compression-ignition engines
First Claim
1. A rotary piston compression-ignition internal combustion engine comprising a housing defining a main chamber comprising n lobes and a subsidiary chamber, the lower part of which is formed by a shaped recess, which serves as a primary ignition chamber and which communicates with the main chamber via a bore in the housing wall leading from the recess to the chamber, a shaft extending axially of the housing, an (n + 1) sided piston eccentrically mounted on the shaft and rotatable in the housing, a seal mounted at each apex formed between each pair of adjacent sides of the piston, means for injecting fuel into the primary ignition chamber, a tubular insert of a refractory material fitted into the bore and stopping short of the internal surface of the main chamber and means positively locating the insert in the bore for preventing the insert from expanding into the main chamber during operation of the engine.
2 Assignments
0 Petitions
Accused Products
Abstract
A rotary piston compression-ignition internal combustion engine comprises a primary ignition chamber communicating with the main rotor chamber via a tubular insert of highly refractory material fixed in a bore formed in the rotor housing. The tube is screwed in the bore and shoulders on the insert and bore provide a positive location. The insert stops short of the end of the bore leading obliquely into the main rotor chamber and a fuel injector is disposed with its injection axis projecting obliquely and near-tangentially into that part of the primary ignition chamber remote from the main chamber.
42 Citations
16 Claims
- 1. A rotary piston compression-ignition internal combustion engine comprising a housing defining a main chamber comprising n lobes and a subsidiary chamber, the lower part of which is formed by a shaped recess, which serves as a primary ignition chamber and which communicates with the main chamber via a bore in the housing wall leading from the recess to the chamber, a shaft extending axially of the housing, an (n + 1) sided piston eccentrically mounted on the shaft and rotatable in the housing, a seal mounted at each apex formed between each pair of adjacent sides of the piston, means for injecting fuel into the primary ignition chamber, a tubular insert of a refractory material fitted into the bore and stopping short of the internal surface of the main chamber and means positively locating the insert in the bore for preventing the insert from expanding into the main chamber during operation of the engine.
Specification