US4432316A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cold HC emission controlling device for automobile equipped with catalyst type disposal system
Assignee: Toyota Motor Corp
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Filing: 1981-09-14
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Granted: 1984-02-21
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Expires: 2001-09-14
Abstract
Abstract A HC emission controlling apparatus for use in an automobile is equipped with a catalytic type emission disposal converter (system) as an anti-pollution measure, having a deceleration emission controlling device such as a dash pot engageable with the throttle valve lever and connected to a vacuum control device. The apparatus includes a deceleration emission controlling device connected through a vacuum-transmitted valve to the vacuum controlling device, the vacuum controlling device being provided with a change-over valve which is adapted to be actuated by a temperature-sensitive actuating member. The change-over valve brings the vacuum-transmitted valve into communication with the atmosphere and with a vacuum source, respectively, before and after the warming up of the engine.
Inventors
- 👤 Tamotsu Ogita
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:35
CPC Classifications
F; F02; F02M; F02M3/00; F02M3/06; F02M3/062
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
188 words
A cold HC emission controlling apparatus for use in an automobile equipped with a catalytic type disposal system, the apparatus comprising a deceleration emission control device having a delaying rod positioned to be moved into and out of engagement with a throttle valve lever in a carburetor of an engine of the automobile, a vacuum control device for operating said deceleration emission control device through a vacuum-transmitting valve; whereby said vacuum-transmitting valve operates said decelerating emission control device; said vacuum control device comprising a bimetal temperature sensitive actuating member and a change-over valve operatively connected to said bimetal member for moving from said vacuum transmitting valve from a position in which said vacuum control device is put in communication with a vacuum source to a position in which said vacuum control device is put in communication with the atmosphere both in said vacuum-transmitting valve, means to locate at least that portion of said vacuum transmitting valve housing said bimetal member directly in the coolant flow stream in the cooling water jacket of the engine, and a vacuum check valve positioned between said vacuum source and said vacuum-transmitting valve.
Claim 2
Dependent Claim
188 words
A cold HC emission controlling apparatus for use in an automobile equipped with a catalytic type disposal system, the apparatus comprising a deceleration emission control device having a delaying rod positioned to be moved into and out of engagement with a throttle valve lever in a carburetor of an engine of the automobile, a vacuum control device for operating said deceleration emission control device through a vacuum-transmitting valve; whereby said vacuum-transmitting valve operates said decelerating emission control device; said vacuum control device comprising a bimetal temperature sensitive actuating member and a change-over valve operatively connected to said bimetal member for moving from said vacuum transmitting valve from a position in which said vacuum control device is put in communication with a vacuum source to a position in which said vacuum control device is put in communication with the atmosphere both in said vacuum-transmitting valve, means to locate at least that portion of said vacuum transmitting valve housing said bimetal member directly in the coolant flow stream in the cooling water jacket of the engine, and a vacuum check valve positioned between said vacuum source and said vacuum-transmitting valve.
Claim 3
Dependent Claim
23 words
A cold HC emission controlling apparatus as claimed in claim 1, wherein said deceleration emission control device is constituted by a dash pot.
Claim 4
Dependent Claim
23 words
A cold HC emission controlling apparatus as claimed in claim 1, wherein said deceleration emission control device is constituted by a throttle positioner.
Claim 5
Dependent Claim
22 words
A cold HC emission controlling apparatus as claimed in claim 1, wherein said vacuum source is an intake manifold of the engine.
Claim 6
Dependent Claim
22 words
A cold HC emission controlling apparatus as claimed in claim 1, wherein said atmospheric side is communicated with via an air cleaner.
References Cited (Backward Citations)
US3301242A
Cited
US3631845A
Cited
US3612018A
Cited
US4059088A
Cited
US4060063A
Cited
US4178890A
Cited
US4168681A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-02-20 | 1987-08-22 | 1988-02-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-20 | 1991-08-22 | 1992-02-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-20 | 1995-08-22 | 1996-02-21 | $7700.00 | Window Closed / Lapsed |