Title: Adiabatic integral intake and exhaust conduit for internal combustion engine

Abstract: An intake and exhaust pipe construction for an internal combustion engine of the type having a main combustion chamber supplied with a lean mixture and an auxiliary combustion chamber supplied with a rich mixture. A spark plug ignites the rich mixture in the auxiliary chamber and the resulting torch flame passes through a torch nozzle to ignite the lean mixture in the main chamber. The auxiliary intake passage which supplies the auxiliary combustion chamber with the rich air fuel mixture is integrally formed with the exhaust passage such that a common wall extends there between. A shell is disposed about the intake and exhaust passages and spaced therefrom to form an air gap between the shell and passages. Openings are provided in the shell for allowing air flow to and from the air gap. The air flowing from the gap is directed by a conduit to the inlet opening of the intake system.

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Inventors: Tamai, Hisashi (Tokyo, JA)
Nakano, Soichi (Kawagoe, JA)

Application Number: 372747
Filing Date: 1973-06-22
Publication_date: 1976-01-13
Assignee: Honda Giken Kogyo Kabushiki Kaisha (Tokyo, JA)
Primary Class(es): 123/274 123/184.41, 123/547
Other Classes:
US Patent Ref:

1170337	Feb, 1916	Robinson	165/52.
1289868	Dec, 1918	Moreland	165/52.
1313639	Aug, 1919	Nelson	165/52.
1777949	Oct, 1930	Whiteman	165/52.
2836161	May, 1958	Primakoff	123/122.
3043098	Jul, 1962	Hannon	165/52.
3092088	Jun, 1963	Goossak	123/325.
3659564	May, 1972	Suzuki	123/325.
3741180	Jun, 1973	Eichbaum	123/122.

Other Refs:
Primary Examiner: Myhre, Charles J.
Assistant Examiner: Cox, Ronald B.
Attorney: Lyon and Lyon