Abstract

A biased dual tip seal arrangement for the rotor (106) of a rotary engine (102). The dual tip seals (100-T, 100-L) are located on opposite corners of the tip (130) of a planetary rotor (106). The rotor (106) orbits within a cutout (126) in a main rotor (108). The seals (100-T, 100-L) are biased away from the corners to make sealing contact with the sealing surfaces of the asymmetrical lobe (112) and the cutout (126) of the main rotor (108). Biasing is implemented with springs (1202, 1302, 1412) and with conduits (1006) that pressurize the area under the seals (100-T, 100-L). An asymmetrical lobe (112′) includes a transition zone (802) on the surface of the lobe (112). In the transition zone (802), at least one seal (100-T, 100-L) on the tip (130) maintains contact with the surface (112′) while alternating contact from one seal (100-T, 100-L) to the other.

IPC Classes  ?

• F02B 53/00 - Internal-combustion aspects of rotary-piston or oscillating-piston engines
• F02B 55/08 - Outer members for co-operation with rotary pistonsCasings
• F01C 1/12 - Rotary-piston machines or engines of intermeshing-engagement type, i.e. with engagement of co-operating members similar to that of toothed gearing of other than internal-axis type
• F01C 1/28 - Rotary-piston machines or engines of counter-engagement type, i.e. the movement of co-operating members at the points of engagement being in opposite directions of other than internal-axis type
• F01C 19/00 - Sealing arrangements in rotary-piston machines or engines
• F01C 19/04 - Radially-movable sealings for working fluids of rigid material

Abstract

A biased dual tip seal arrangement for the rotor (106) of a rotary engine (102). The dual tip seals (100-T, 100-L) are located on opposite corners of the tip (130) of a planetary rotor (106). The rotor (106) orbits within a cutout (126) in a main rotor (108). The seals (100-T, 100-L) are biased away from the corners to make sealing contact with the sealing surfaces of the asymmetrical lobe (112) and the cutout (126) of the main rotor (108). Biasing is implemented with springs (1202, 1302, 1412) and with conduits (1006) that pressurize the area under the seals (100-T, 100-L). An asymmetrical lobe (112') includes a transition zone (802) on the surface of the lobe (112). In the transition zone (802), at least one seal (100-T, 100-L) on the tip (130) maintains contact with the surface (112') while alternating contact from one seal (100-T, 100-L) to the other.

IPC Classes  ?

• F01C 1/00 - Rotary-piston machines or engines

Abstract

Apparatus for a fuel injector nozzle (202) interfacing a fuel injector valve assembly (102) with a chamber inside an internal combustion engine housing (104). The nozzle (202) has one end (302) that is outboard relative to the chamber (110) in the housing (104) and an opposite end (404) that is inboard relative to the housing (104). The outboard end (302) is attached to the fuel injector valve assembly (102). The inboard end (404) has a surface that is substantially flush with the surface (110) of a lobe (204-L) defining the chamber (110). The nozzle (202) is hollow with a grouping of discharge ports (402) at the inboard end (404). The nozzle (202) receives fuel from the injector valve assembly (102) and ejects the fuel as spray from the ports (402) in a manner to optimize fuel combustion in the chamber (110).

IPC Classes  ?

• F02M 61/14 - Arrangements of injectors with respect to enginesMounting of injectors

Abstract

An apparatus for facilitating combustion in a rotary engine (100) with planetary rotors (106) orbiting inside a housing (104) containing a main rotor (108) In various embodiments, the planetary rotor (106) has a multi-faceted face (116) that engages a bridge (114) during the transition from the compression cycle to the combustion cycle with the bridge (114) and face (116) forming a dynamic seal, the planetary rotor (106) has a face (116) engaging a bridge (114) during the transition from the compression cycle to the combustion cycle such that the bridge (114) and face (116) have a gap that allows gas flow from the trailing volume (408) to the leading volume (410) and the gap is sufficiently small to quench flame propagation from the leading volume (410) to the trailing volume (408).

IPC Classes  ?

• F02B 53/00 - Internal-combustion aspects of rotary-piston or oscillating-piston engines