Engine exhaust gas discharge arrangement

Details Engine exhaust gas discharge arrangement Engine exhaust gas discharge arrangement

1974-11-04

1976-03-30

Blix, Trygve M.

60320, 115 17, B63H 2134

Patent

active

039466973

ABSTRACT:
Disclosed herein is an engine block including first wall portions defining a combustion chamber, second wall portions defining a bore including a first portion extending from the combustion chamber and a second portion enlarged with respect to the first portion, third wall portions defining a water jacket in cooling relation to the second wall portions, and an elongated duct of heat resistant material communicating through the first bore portion with the combustion chamber so as to receive exhaust gases discharged therefrom, which duct is circumferentially engaged by and supported from the second wall portion at locations spaced lengthwise of the duct and extends in the enlarged bore portion in spaced relation from the second wall portions intermediate the locations, whereby there is provided a stagnant air space between the duct and the block intermediate the locations so as to reduce heat transmission from the duct.

REFERENCES:
patent: 3045423 (1962-07-01), Hulsebus
patent: 3310021 (1967-03-01), Shimanckas
patent: 3577952 (1971-05-01), Tado
patent: 3692006 (1972-09-01), Miller et al.

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