Rotary engine heat sensing arrangement

• US 3,886,912 A
• Filed: 02/08/1974
• Issued: 06/03/1975
• Est. Priority Date: 02/08/1974
• Status: Expired due to Term

• Current Assignee: Robert J. Haglund
• Original Assignee: Robert J. Haglund
• Inventors: Haglund, Robert J.
• Primary Examiner(s): Gordon, Clarence R.
• Application Number:
  US05/440,666
• Time in Patent Office: 480 Days
• Field of Search: 123/8.01,8.45,41.15,8.05 418/96 73/347,346
• US Class Current: 123/200
• CPC Class Codes: F02B 2053/005 Wankel engines
• CPC Class Codes: F02B 55/08 Outer members for co-operation with rotary pistons; Casings
• CPC Class Codes: F02B 77/08 Safety, indicating or supervising devices thermal insulation F02B77/11; rendering engines inoperative or idling F02D17/04; dependent on lubricating conditions F01M1/22; dependent on cooling F01P11/14

Abstract

A heat sensor is strategically mounted in a rotary housing of a rotary engine so as to closely sense heat in the hotest housing region.

Claims

1. An internal combustion rotary engine having a stationary body comprising a rotor housing having an outer peripheral wall and a multi-lobed inner peripheral wall and a pair of end wall housings having oppositely facing internal end walls cooperatively defining a cavity, a crankshaft rotatably mounted in said stationary body having an eccentric located in said cavity, a multi-apex rotor rotatably mounted on said eccentric having sides opposite said end walls and a plurality of faces opposite said inner wall, means for causing said rotor and said crankshaft to turn in a fixed speed relationship while said rotor planetates with a fixed relationship to said rotor housing, said rotor faces and said end walls and said inner wall cooperating to provide a plurality of working chambers that are spaced about and move with said rotor within said rotor housing while varying in volume as said rotor planetates, said stationary body having an intake passage that is opened by said rotor to said chambers as they expand to deliver an air-fuel mixture thereto, a spark plug mounted in said rotor housing for igniting the air-fuel mixture in said chambers, said stationary body having an exhaust passage that is opened by said rotor to said chambers during their contraction to receive exhaust gas therefrom, peripherally spaced axially extending coolant passages in said rotor housing spaced by radially extending ribs between said inner wall and said outer wall, and heat sensor means including a heat input body connected to only said outer wall in the hotest region of said rotor housing and received with space completely thereabout in a hole in one of said ribs so as to be open to coolant in the coolant passages normally separated by said one rib, said heat input body having its most direct heat input area at the inner end thereof spaced opposite and closest to the outer side of said inner wall so that said heat sensor means senses the heat of said inner wall by convection and also conduction through coolant between said most direct heat input area and said inner wall and when there is no coolant by radiation through the space normally occupied by coolant and also conduction through said one rib and the connection of said heat input body with said outer wall.

2. An internal combustion rotary engine having a stationary body comprising a rotor housing having an outer peripheral wall and a multi-lobed inner peripheral wall and a pair of end wall housings having oppositely facing internal end walls cooperatively defining a cavity, a crankshaft rotatably mounted in said stationary body having an eccentric located in said cavity, a multi-apex rotor rotatably mounted on said eccentric having sides opposite said end walls and a plurality of faces opposite said inner peripheral wall, means for causing said rotor and said crankshaft to turn in a fixed speed relationship while said rotor planetates with a fixed relationship to said rotor housing, said rotor faces and said end walls and said inner wall cooperating to provide a plurality of working chambers that are spaced about and move with said rotor within said rotor housing while varying in volume as said rotor planetates, said stationary body having an intake passage that is opened by said rotor to said chambers as they expand to deliver an air-fuel mixture thereto, a pair of spark plugs mounted in said rotor housing at peripherally spaced locations for igniting the air-fuel mixture in said chambers, said stationary body having an exhaust passage that is opened by said rotor to said chambers during their contraction to receive exhaust gas thereFrom, peripherally spaced axially extending coolant passages in said rotor housing spaced by radially extending ribs between said inner wall and said outer wall, and heat sensor means including a heat input body connected to only said outer wall between said spark plugs and received with space completely thereabout in a hole in one of said ribs so as to be open to coolant in said coolant passages between said spark plugs, said heat input body having its most direct heat input area at the inner end thereof spaced opposite and closest to the outer side of said inner wall so that said heat sensor means senses the heat of said inner wall by convection and also conduction through coolant between said most direct heat input area and said inner wall and when there is no coolant by radiation through the space normally occupied by coolant and also conduction through said one rib and the connection of said heat input body with said outer wall.