US4117672A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust reaction chamber system of engine
Assignee: Honda Motor Co Ltd
•
Filing: 1976-08-06
•
Granted: 1978-10-03
•
Expires: 1996-08-06
Abstract
Abstract An engine exhaust reaction chamber system having an inner exhaust reaction chamber surrounded by an outer exhaust reaction chamber, the system having a partition plate means for preventing exhaust flow bypass through the outer exhaust reaction chamber positioned within the annular space of the outer exhaust reaction chamber. A guide plate may also be positioned within the annular space of the outer exhaust reaction chamber in order to separate the outer exhaust reaction chamber into first and second outer exhaust reaction chamber passages. Further, a middle exhaust reaction chamber may be positioned between the inner and outer exhaust reaction chambers, the middle exhaust reaction chamber also being provided with a partition plate in order to prevent exhaust flow bypass through the middle exhaust reaction chamber and being provided with a guide plate separating the middle exhaust reaction chamber into first and second middle exhaust reaction chamber passages.
Inventors
- 👤 Shuichi Yamazaki
- 👤 Ikuo Kajitani
- 👤 Yasuo Kosato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:53
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/26
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
206 words
In an engine exhaust reaction chamber system including an exhaust manifold having an inlet and an outlet, the improvement comprising: an inner exhaust reaction chamber having an outlet and inlet, said inlet being in communication with said exhaust manifold inlet; an outer exhaust reaction chamber annularly enveloping said inner exhaust reaction chamber and having an inlet in communication with said inner exhaust reaction chamber outlet and an outlet in communication with said exhaust manifold outlet; a guide plate positioned within said outer exhaust reaction chamber, said guide plate separating said outer exhaust reaction chamber into first and second outer exhaust reaction chamber passages, said first outer exhaust reaction chamber passage connecting said outer exhaust reaction chamber inlet to said second outer exhaust reaction chamber passage and said second outer exhaust reaction chamber passage connecting said first outer exhaust reaction chamber passage to said outer exhaust reaction chamber outlet; and a partition plate means positioned within said outer exhaust reaction chamber for preventing flow bypass between said inner exhaust reaction chamber outlet and said outer exhaust reaction chamber outlet, whereby exhaust manifold gases are forced to pass in the same direction through the annular space within said outer exhaust reaction chamber prior to exiting said exhaust manifold.
Claim 2
Dependent Claim
206 words
In an engine exhaust reaction chamber system including an exhaust manifold having an inlet and an outlet, the improvement comprising: an inner exhaust reaction chamber having an outlet and inlet, said inlet being in communication with said exhaust manifold inlet; an outer exhaust reaction chamber annularly enveloping said inner exhaust reaction chamber and having an inlet in communication with said inner exhaust reaction chamber outlet and an outlet in communication with said exhaust manifold outlet; a guide plate positioned within said outer exhaust reaction chamber, said guide plate separating said outer exhaust reaction chamber into first and second outer exhaust reaction chamber passages, said first outer exhaust reaction chamber passage connecting said outer exhaust reaction chamber inlet to said second outer exhaust reaction chamber passage and said second outer exhaust reaction chamber passage connecting said first outer exhaust reaction chamber passage to said outer exhaust reaction chamber outlet; and a partition plate means positioned within said outer exhaust reaction chamber for preventing flow bypass between said inner exhaust reaction chamber outlet and said outer exhaust reaction chamber outlet, whereby exhaust manifold gases are forced to pass in the same direction through the annular space within said outer exhaust reaction chamber prior to exiting said exhaust manifold.
Claim 3
Dependent Claim
22 words
The engine exhaust reaction chamber system claimed in claim 1 wherein said outer exhaust reaction chamber is surrounded by an insulative material.
Claim 4
Dependent Claim
28 words
The engine exhaust reaction chamber system claimed in claim 1 wherein the exterior of said inner exhaust reaction chamber forms the interior of said outer exhaust reaction chamber.
Claim 5
Dependent Claim
191 words
In an engine exhaust reaction chamber system including an exhaust manifold havng an inlet and an outlet, the improvement comprising: an inner exhaust reaction chamber having an outlet, and an inlet in communication with said exhaust manifold inlet; a middle exhaust reaction chamber positioned annularly about said inner exhaust reaction chamber and having an outlet, and an inlet in communication with said inner exhaust reaction chamber outlet; an outer exhaust reaction chamber positioned annularly about said middle exhaust reaction chamber and having an outlet in communication with said exhaust manifold outlet and an inlet in communication with said middle exhaust reaction chamber outlet; a first partition plate means, positioned within said middle exhaust reaction chamber, for preventing exhaust gas bypass flow between said inner exhaust reaction chamber outlet and middle exhaust reaction chamber outlet; and a second partition plate means, positioned within said outer exhaust reaction chamber, for preventing exhaust gas bypass flow between said middle exhaust reaction chamber outlet and said outer exhaust reaction chamber outlet, whereby exhaust manifold gases are forced to pass sequentially through said inner, middle and outer exhaust reaction chambers prior to exiting said exhaust manifold.
Claim 6
Dependent Claim
191 words
In an engine exhaust reaction chamber system including an exhaust manifold havng an inlet and an outlet, the improvement comprising: an inner exhaust reaction chamber having an outlet, and an inlet in communication with said exhaust manifold inlet; a middle exhaust reaction chamber positioned annularly about said inner exhaust reaction chamber and having an outlet, and an inlet in communication with said inner exhaust reaction chamber outlet; an outer exhaust reaction chamber positioned annularly about said middle exhaust reaction chamber and having an outlet in communication with said exhaust manifold outlet and an inlet in communication with said middle exhaust reaction chamber outlet; a first partition plate means, positioned within said middle exhaust reaction chamber, for preventing exhaust gas bypass flow between said inner exhaust reaction chamber outlet and middle exhaust reaction chamber outlet; and a second partition plate means, positioned within said outer exhaust reaction chamber, for preventing exhaust gas bypass flow between said middle exhaust reaction chamber outlet and said outer exhaust reaction chamber outlet, whereby exhaust manifold gases are forced to pass sequentially through said inner, middle and outer exhaust reaction chambers prior to exiting said exhaust manifold.
Claim 7
Dependent Claim
168 words
The engine exhaust reaction chamber system claimed in claim 4 wherein said system is further defined as including a first guide plate positioned within said middle exhaust reaction chamber, said first guide plate separating said middle exhaust reaction chamber into first and second middle exhaust chamber passages, said first middle exhaust reaction chamber passage connecting said middle exhaust reaction chamber inlet to said second middle exhaust reaction chamber passage, and said second middle exhaust reaction chamber passge connecting said first middle exhaust reaction chamber passage to said middle exhaust reaction chamber outlet; and a second guide plate positioned within said outer exhaust reaction chamber, said second guide plate separating said outer exhaust reaction chamber into first and second outer exhaust reaction chamber passages, said first outer exhaust reaction chamber passage connecting said outer exhaust reaction chamber inlet to said second outer exhaust reaction chamber passage, and said second outer exhaust reaction chamber passage connecting said first outer exhaust reaction chamber passage to said outer exhaust reaction chamber outlet.
Claim 8
Dependent Claim
22 words
The engine exhaust reaction chamber system claimed in claim 4 wherein said outer exhaust reaction chamber is surrounded by an insulative material.
Claim 9
Dependent Claim
22 words
The engine exhaust reaction chamber system claimed in claim 5 wherein said outer exhaust reaction chamber is surrounded by an insulative material.
Claim 10
Dependent Claim
46 words
The engine exhaust reaction chamber system claimed in claim 4 wherein the exterior of said inner exhaust reaction chamber forms the interior of said middle exhaust reaction chamber, and the exterior of said middle exhaust reaction chamber forms the interior of said outer exhaust reaction chamber.
Claim 11
Independent Claim
146 words
A method of preventing increase of engine back pressure in an exhaust reaction chamber system comprising: passing exhaust gases into an inner exhaust reaction chamber; passing said exhaust gases into a middle exhaust reaction chamber which surrounds said inner exhaust reaction chamber and includes first and second middle exhaust reaction chamber passages; circulating said exhaust gases through the arcuate length of said first and second middle exhaust reaction chamber passages; preventing exhaust gas bypass through said middle exhaust reaction chambers; passing said exhaust gases into an outer exhaust reaction chamber which surrounds said middle exhaust reaction chamber and includes first and second outer exhaust reaction chamber passages; circulating said exhaust gases through the arcuate length of said first and second outer exhaust reaction chamber passages; preventing exhaust gas bypass through said outer exhaust reaction chamber; and exhausting said exhaust gases from said exhaust reaction chamber system.
Claim 12
Independent Claim
146 words
A method of preventing increase of engine back pressure in an exhaust reaction chamber system comprising: passing exhaust gases into an inner exhaust reaction chamber; passing said exhaust gases into a middle exhaust reaction chamber which surrounds said inner exhaust reaction chamber and includes first and second middle exhaust reaction chamber passages; circulating said exhaust gases through the arcuate length of said first and second middle exhaust reaction chamber passages; preventing exhaust gas bypass through said middle exhaust reaction chambers; passing said exhaust gases into an outer exhaust reaction chamber which surrounds said middle exhaust reaction chamber and includes first and second outer exhaust reaction chamber passages; circulating said exhaust gases through the arcuate length of said first and second outer exhaust reaction chamber passages; preventing exhaust gas bypass through said outer exhaust reaction chamber; and exhausting said exhaust gases from said exhaust reaction chamber system.
References Cited (Backward Citations)
US3633368A
Cited
US3722221A
Cited
US3839862A
Cited
US3994271A
Cited
US4016846A
Cited
US3990234A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-02 | 1982-04-03 | 1982-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-02 | 1986-04-03 | 1986-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-02 | 1990-04-03 | 1990-10-03 | $7700.00 | Window Closed / Lapsed |