US6026641A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for improved control of exhaust gas temperature from a two-stroke engine
Assignee: Individual
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Filing: 1998-02-02
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Granted: 2000-02-22
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Expires: 2018-02-02
Abstract
Abstract An exhaust gas temperature control system for a two-stroke engine, the exhaust gas temperature control system including an electronically controlled water injection system. The electronically controlled water injection system includes a water supply conduit section for supplying water to a solenoid valve, and a spraying conduit section for injecting water into an exhaust pipe to thereby control exhaust gas temperature, and hence sonic wave speed within the exhaust pipe. A through-filter is provided as a splitting junction to provide filtered water to the electronically controlled water injection system and unfiltered water to the engine for cooling. A smoothing device in the form of an elastomer hose made of low durometer material or a pressurized bladder is included within the spraying conduit section for maintaining smooth water pressure within the water injected into the exhaust pipe. Additionally, a capturing device in the form of a pressurized bladder and check valve is provided within the supply conduit section in order to maintain ample water pressure supplied to the solenoid valve.
Inventors
- 👤 Ross H. Liberty
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:42
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/02; F01N3/04; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
101 words
An exhaust gas temperature control system for use with a two-stroke engine having engine exhaust means, the system comprising: a fluid inlet for providing fluid to control exhaust gas temperature within the engine exhaust means; a first fluid supply means in fluid communication with the fluid inlet; a second fluid supply means in fluid communication with the engine exhaust means; a valve connecting the first fluid supply means and the second fluid supply means; and variable volume smoothing means for smoothing pulses of fluid within the second fluid supply means, the smoothing means being integral with the second fluid supply means.
Claim 2
Dependent Claim
101 words
An exhaust gas temperature control system for use with a two-stroke engine having engine exhaust means, the system comprising: a fluid inlet for providing fluid to control exhaust gas temperature within the engine exhaust means; a first fluid supply means in fluid communication with the fluid inlet; a second fluid supply means in fluid communication with the engine exhaust means; a valve connecting the first fluid supply means and the second fluid supply means; and variable volume smoothing means for smoothing pulses of fluid within the second fluid supply means, the smoothing means being integral with the second fluid supply means.
Claim 3
Dependent Claim
32 words
The exhaust gas temperature control system of claim 1 wherein the second fluid supply means and smoothing means comprise an elastomeric hose having a durometer value less than or equal to sixty.
Claim 4
Dependent Claim
52 words
The exhaust gas temperature control system of claim 1 wherein the second fluid supply means and smoothing means comprise: a first conduit in fluid communication with the valve; a bladder in fluid communication with the first conduit; and a second conduit in fluid communication with the bladder and the engine exhaust means.
Claim 5
Dependent Claim
111 words
The exhaust gas temperature control system of claim 1 wherein the first fluid supply means comprise: a first conduit in fluid communication with the fluid inlet; a second conduit in fluid communication with the valve; and a through-filter connecting the first conduit and the second conduit, the through-filter comprising: a hollow body; an inlet at a first end of the hollow body and in fluid communication with the first conduit; an outlet at a second end of the hollow body and in fluid communication with a secondary conduit; a radial outlet located along the hollow body and in fluid communication with the second conduit; and filter means at the radial outlet.
Claim 6
Independent Claim
90 words
A method of controlling exhaust gas temperature from a two-stroke engine having exhaust means, the method comprising: supplying a fluid to a valve via a first fluid supply means; supplying an amount of fluid to variable volume smoothing means by opening and closing the valve, the amount of fluid supplied being determined by operation of the two-stroke engine; smoothing water pressure of the supply of fluid with the smoothing means; and transferring the supply of fluid to the exhaust means to thereby control exhaust gas temperature within the exhaust means.
Claim 7
Independent Claim
90 words
A method of controlling exhaust gas temperature from a two-stroke engine having exhaust means, the method comprising: supplying a fluid to a valve via a first fluid supply means; supplying an amount of fluid to variable volume smoothing means by opening and closing the valve, the amount of fluid supplied being determined by operation of the two-stroke engine; smoothing water pressure of the supply of fluid with the smoothing means; and transferring the supply of fluid to the exhaust means to thereby control exhaust gas temperature within the exhaust means.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2003-02-21 | 2003-08-23 | 2004-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2007-02-21 | 2007-08-23 | 2008-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2011-02-21 | 2011-08-23 | 2012-02-22 | $7700.00 | Window Closed / Lapsed |