US3857373A - Vacuum delay valve - Google Patents

Vacuum delay valve Download PDF

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Publication number
US3857373A
US3857373A US00311090A US31109072A US3857373A US 3857373 A US3857373 A US 3857373A US 00311090 A US00311090 A US 00311090A US 31109072 A US31109072 A US 31109072A US 3857373 A US3857373 A US 3857373A
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US
United States
Prior art keywords
vacuum
valve
filter
chamber
fluid
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US00311090A
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English (en)
Inventor
F Martin
R Holbrook
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ACUSTAR Inc A CORP OF
Old Carco LLC
Original Assignee
Chrysler Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chrysler Corp filed Critical Chrysler Corp
Priority to US00311090A priority Critical patent/US3857373A/en
Priority to CA179,679A priority patent/CA986386A/en
Priority to AU60005/73A priority patent/AU473086B2/en
Priority to JP48124115A priority patent/JPS4986710A/ja
Priority to FR7342837A priority patent/FR2209406A5/fr
Priority to US05/468,851 priority patent/US3975609A/en
Application granted granted Critical
Publication of US3857373A publication Critical patent/US3857373A/en
Assigned to FIDELITY UNION TRUST COMPANY, TRUSTEE reassignment FIDELITY UNION TRUST COMPANY, TRUSTEE MORTGAGE (SEE DOCUMENT FOR DETAILS). Assignors: CHRYSLER CORPORATION
Assigned to CHRYSLER CORPORATION reassignment CHRYSLER CORPORATION ASSIGNORS HEREBY REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID INVENTIONS AND RELEASE THEIR SECURITY INTEREST. (SEE DOCUMENT FOR DETAILS). Assignors: ARNEBECK, WILLIAM, INDIVIDUAL TRUSTEE, FIDELITY UNION BANK
Assigned to CHRYSLER CORPORATION reassignment CHRYSLER CORPORATION PARTES REASSIGN, TRANSFER AND RELINQUISH THEIR ENTIRE INTEREST UNDER SAID PATENTS ALSO RELEASE THEIR SECURITY INTEREST. (SEE RECORD FOR DETAIL) Assignors: MANUFACTURERS NATIONAL BANK OF DETROIL (CORPORATE TRUSTEE) AND BLACK DONALD E., (INDIVIDUAL TRUSTEE)
Assigned to ACUSTAR, INC., A CORP. OF DE reassignment ACUSTAR, INC., A CORP. OF DE ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CHRYSLER MOTORS CORPORATION (FORMERLY CHRYSLER CORPORATION)
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
    • F02P5/00—Advancing or retarding ignition; Control therefor
    • F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
    • F02P5/05—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means
    • F02P5/10—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure
    • F02P5/103—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using mechanical means dependent on fluid pressure in engine, e.g. combustion-air pressure dependent on the combustion-air pressure in engine
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/7722—Line condition change responsive valves
    • Y10T137/7781—With separate connected fluid reactor surface
    • Y10T137/7783—Valve closes in responses to reverse flow

Definitions

  • atransmission spark advance control system utilizes a fluid pressure responsive switch for electrically disabling the spark advance control below a certain vehicle speed if the vehicle is equipped with an automatic transmission. If the vehicle is equipped with a manual transmission, the vacuum advance is disabled when the transmission is in first or second gear.
  • a fluid pressure responsive switch for electrically disabling the spark advance control below a certain vehicle speed if the vehicle is equipped with an automatic transmission. If the vehicle is equipped with a manual transmission, the vacuum advance is disabled when the transmission is in first or second gear.
  • Another system is identified as an automatic vacuum spark advance control system and is an electric controlled vacuum and speed responsive system for disabling the engine vacuum advance during acceleration below certain speeds and within a predetermined vacuum range.
  • Anexample of a controller as used in such a system is found in US. Pat. No. 3,665,904.
  • a vacuum delay valve having a housing containing a chamber therein with an input and output port for fluid communication with the chamber.
  • a plate is supported within the chamber between the input and. output ports for dividing the chamber into two vacuum-tight chambers.
  • a unidirectional valve for allowing the vacuum at the output portto be reduced synchronously with the vacuum at the input port.
  • a timemetering delay orifice Positioned adjacent to the unidirectional valve on theplate and in fluid communication between both chambers is a timemetering delay orifice for controlling the rate of change of the vacuum at the outut port when the vacuum at the input port is increased.
  • a thermal responsive actuator cooperates with the unidirectional valve, to change the valve characteristics to'a bidirectional full flow valve below a predetermined temperature range.
  • FIG. 7 is a plan view of another embodiment of the time metering orifice of the valve.
  • FIG. 8 is a sectional view taken along line 88 of FIG. 7.
  • FIG. 1 a schematic of an internal combustion engine spark advance control system utilizing a vacuum delay valve.
  • the vacuum delay valve 10 is interconnected in the vacuum line 12 and 13 between the ported vacuum port 14 of the carburetor l6 and vacuum motor 18in the spark advance mechanism of the distributor 20.
  • the vacuum valve 10 controls the application ofvacuum to the vacuum motor 18 for advancing'or retarding the ignition of the engine 22.
  • the vacuum valve 10 comprises a housing 24 having an enclosed chamber with at least two ports .26 and 27 with an integral nipple extension for fluid communication therewith.
  • One of the ports 26 is connected by a first vacuum line 12 to the carburetor 16 and another port 27 is connected by a second vacuum line. 13 to the vacuum motor 18 in the spark advance control unit.
  • the throttle plate 28 is in the illustrated position when the internal combustion engine 22 is at idle.
  • valve of the ported vacuum at this time isyapproximately equal to the atmospheric pressure of the air being drawin into the carburetor 16 from the air cleaner 30.
  • the throttle plate 28' moves in a counter-clockwise position, the ported vacuum approaches the value of the manifold vacuum.
  • ported vacuum is supplied directly 'to the spark advance control vacuum motor 18 for controlling the ignition point of the engine 22.
  • the spark is advanced and, as a result, the emission gases are rich in oxides of nitrogen. It is a function of the vacuum delay valve 10 to delay the vacuum build-up'applied to the spark advance control vacuum motor during transient engine operation thereby effectively retarding the spark.
  • the vacuum valve 10 comprises a housing 24 containing an enclosed chamber with at least two spaced-apart ports 26 and-27, namely, an input 26 and output 27 port. Supported within the chamber is a plate means 32 for dividing the chamber into a first 34 and a second 36 pressure chamber wherein each of said chambers has a port connected thereto.
  • the plate 32 has an aperture 38 therein for receiving a unidirectional or dump valve 40 for controlling the fluid communication between the two chambers 34 and 36.
  • a unidirectional or dump valve 40 for controlling the fluid communication between the two chambers 34 and 36.
  • the dump valve blocks fluid communication between the two chambers.
  • a delay orifice 42 for controlling the rate of fluid communication between the chambers when the vacuum is greater in the first chamber 34. Therefore, the dump valve 40 allows unrestricted fluid communication between the chambers when the pressure is greater in the first chamber and the delay orifice 42 controlsv the fluid communication between the chambers when the vacuum is greater in the first chamber 34.
  • the vacuum valve is physically positioned on either side of the engine compartment fire wall'44 with a portion of the valve protruding into the cowl inlet area.
  • a thermal actuating member 46 or bi-metal which cooperates with an aperture 48 in the dump valve making the operation of the dump valve responsive to the temperature of the valve environment.
  • the dump valve 40 is an umbrella-shaped valve having the axially located aperture 48 extending through both the umbrella portion 50 and stem portion 52 of the valve.
  • the stem portion 52 is located in the aperture 38 in the plate 32 between the chambers 34- and 36 thereby locating and holding the valve in position.
  • the aperture 48 provides bidirectional fluid communication between the chambers.
  • the bi-metal member 46 When the temperature of the environment surrounding the valve is above a first predetermined temperature which is 68F., the bi-metal member 46 is in its first position in contact with the stem portion 52 of the dump valve thereby sealing the aperture 48 against fluid communication therethrough-When the temperature goes below a second predetermined temperature of 48F., the bi-metal member 46 snaps over to its second position away from the dump valve thereby opening the aperture 48.
  • the aperture 38 in the plate 32 in the preferred embodiment as illustrated in FIG. 5, comprises an elongated slot having a portion 54 at one end with a diameter which is greater than the diameter of the stem portion 52 of the dump valve. At the other end of the slot there is the aperture 38 having a vdiameter adapted to receive one of the smaller diameters of the stem 52.
  • the particular configuration of the slot as illustrated in FIG. permits easy insertion of the valve 40 into the plate 32 at the one end and also provides a path for fluid communication between the chambers when the pressure is greater in the first chamber.
  • the dump valve functions as a unidirectional valve inasmuch as the axially located aperture 48 is closed by the thermal actuated member 46. Below 48F., the dump valve is a bi directional valve with fluid communication in both directions through the aperture 48 in the valve.
  • the delay valve in a preferred embodiment is a small orifice 42 extending through the plate 32 and located outside of the confines of the umbrella portion 50 of the dump valve 40.
  • the orifice 42 has a predetermined diameter for controlling the rate of fluid communication between the chambers 34 and 36 when the temperature is greater than 68F. and the dump valve aperture 48 is sealed.
  • the side 56 of the plate 32 facing the first chamber 34 has a coined or thinned area- 58 for reducing the thickness of the plate 32.
  • the orifice 42 is located within this area thereby reducing the length of the orifice and reducing the manufacturing time to put the orifice in the plate,
  • the orifice 42 is .005 inch long and the diameter is 0.003 inch resulting in a time delay of 28 seconds for increasing the vacuum in the second chamber 36 from O to 9.5 inches of mercury when the vacuum in the first chamber 34 is equal to 12 inches of mercury.
  • FIGS. 7 and 8 illustrate a modification of the delay valve comprising a second aperture 60 in the plate located under the umbrella portion 50 of the valve and a small coined slot 62 extendingfrom the second aperture to outside the umbrella perimeter.
  • the volume of the slot 62 enclosed by the edge of the umbrella determines the time delay.
  • the second aperture 60 can also function as the check valve allowing communication when the vacuum is greater in the second chamber.
  • a filter 64 Positioned on either side of the orifice 42 in both chambers is a filter 64 for filtering out foreign particles in the fluid passing through the valve.
  • Each of the filters 64 is a laminated filter comprising of four layers which are enclosed in a housing 66 forming a unitary structure.
  • the first filter member 68 which is positioned furthest from the orifice, is a random orientated felt material providing a depth filter for trapping relatively large foreign particles in the fluid flow and also for dispersing the fluid flow through the filter.
  • the second filter member 70 which is positioned in contact with the first filter member 68 is a paper filter for removing from the fluid passing through the first filter member, particles having a size greater than 15 microns.
  • the third filter member 72 positioned in contact with the second filter member is fiberglas filter for removing from the fluid passing through the second filter member, particles having a size greater than 0.3 microns.
  • the last layer 74 of the filter 64 is a nylon screen for protecting the fiberglas filter 72 when the nylon housing 66 is moulded around the laminated members forming a unitary structure.
  • the filter 64 is pressed into the valve housing 24 such that all fluid flow must go through the filters 64 and cannot go around the filter housing.
  • a spring clip 76 may be used for holding the filter in the housing.
  • This filter is for removing from the fluid any liquids such as gasoline or water which may be in the vacuum line 12 coming from the carburetor and which, if not removed, would tend to clog and block the filter 64.
  • the method of fabricating the delay valve comprises the use of an electric discharge machine for boring the orifice 42 in the plate 32.
  • the plate 32 is first formed to size and shape as illustrated in FIG. 5 having the central aperture 38 and 52 formed therein. Next, a small area 58 near the outside periphery of the plate is coined to a reduced thickness.
  • the plate member 32 is positioned within an electric discharge boring machine in such a 'manner that the electron beam from the machine will pass through the coined area 58.
  • the orifice 42 is 0.003 inch in diameter.
  • the laminated filters 64 function to clean the fluid flow through the valve after the valve is assembled.
  • the filters are such as to reject particles as small as l/200th the diameter of the human hair from reaching the orifice 42.
  • first chamber 32 is offset from the second chamber 36 and, in order to provide fluid communications between the two chambers a rubber gasket 80 cooperating with an upper housing member 82 forms a passageway between both sections of the first chamber 34.
  • the function of the vacuum valve is to delay the vacuum build-up to the distributor vacuum 18 motor. This delay occurs when the vacuum in the carburetor 16 is greater than the vacuum in the distributor vacuum motor 18. This delay functions to retard the engine spark thereby delaying the burning process in the cylinders. When the burning process is delayed the exhaust, gas temperatures are increased and peak cylinder pressures are reduced thereby reducing the amount of unburned hydrocarbons and oxides of nitrogen in the exhaust gas from the engine 22. However, due to thestructure of the valve 10 when the temperature is low below 48F there is'no delay through the valve in either direction.
  • a vacuum delay valve 10 such as may be used' in a motor vehicle.
  • the valve operates to delay the build-up of vacuum from the carburetor to the vehicle spark advance control unit.
  • the valve functions to provide nonrestrictive fluid flow to reduce.
  • a vacuum delay valve comprising:
  • a housing defining an enclosed chamber having at least two ports therein;
  • plate means having an aperture therein and supported within said chamber for dividing said chamher into first and second separate pressure chambers each of which chambers has a port connected thereto for fluid communication therewith;
  • unidirectional valve means located within said aperture for sealing said aperture from fluid communication between said chambers when the vacuum in the first chamber is greater than the vacuum in the second chamber and operable for conducting fluid communication between said chambers when the vacuum in second chamber is greater than the vacuum in the first chamber;
  • a delay valve means located in said plate means and controlling the rate of fluid communication between said chambers when-the vacuum in the first chamber is greater than the vacuum in the second chamber;
  • a second filter member positioned for receiving the 5 fluid flow from said first filter member for removing dirt particles larger than a predetermined size travelling in the fluid between said first member and second filter member;
  • a third filter member positioned for receiving the fluid flow from said second filter member for removing dirt particles larger than a predetermined size travelling in the fluid between said second filter member and the third filter member;
  • a housing member for retaining said-first, second and third filter members in a unitary structure.
  • the filter means additionally includes a fourth filter member for protecting said third filter and a housing member for retaining said first, second; third and fourth filter members in a unitary structure.
  • said first filter member comprises a random orientated felt material
  • said second filter member is a paper filter
  • said third filter member is. a fiberglas filter
  • said fourth filter member is a nylon screen memher.
  • said first predetermined size is' greater than microns and said second predetermined size isgreater than 0.3 microns.
  • a vacuum delay valve interconnected in the vacuum line between the carburetor and the vacuum motor controlling the distributor, said vacuum valve comprising:
  • a pressure chamber connected at one end for fluid communication with the vacuum source in the carburetor and connected at the opposite end for fluid communication with the vacuum motor;
  • plate means positioned within said pressure chamber for dividing said chamber into two fluid-tight vacuum chambers
  • a dump valve positioned within said plate means, said dump valve having an aperture therein for interconnecting said two vacuum chambers;
  • atemperature responsive actuator for sealingsaid aperture at a first temperature allowing fluid flow between said vacuum. motor and said carburetor when the vacuum at the carburetor isless than at the motor and restricting fluid flow when the vacuum at the carburetor is greater;
  • an orifice delay valve positioned within said plate means for controlling the rate of the fluid flow between the vacuum motor and the carburetor when the vacuum is greater at the carburetor;
  • laminated filter means positioned on either side of said plate means for removing particles from. the fluid flowing between the vacuum motor and the carburetor thereby maintaining said time delay valve free from particles; and j a gasoline filter means positioned in said pressure chamber between the carburetor and the laminated filter means for removing gasoline from the fluid flowing through the valve.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Safety Valves (AREA)
  • Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
US00311090A 1972-12-01 1972-12-01 Vacuum delay valve Expired - Lifetime US3857373A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US00311090A US3857373A (en) 1972-12-01 1972-12-01 Vacuum delay valve
CA179,679A CA986386A (en) 1972-12-01 1973-08-27 Spark advance control with vacuum delay valve
AU60005/73A AU473086B2 (en) 1972-12-01 1973-09-04 Vacuum delay valve
JP48124115A JPS4986710A (enrdf_load_html_response) 1972-12-01 1973-11-06
FR7342837A FR2209406A5 (enrdf_load_html_response) 1972-12-01 1973-11-30
US05/468,851 US3975609A (en) 1972-12-01 1974-05-10 Vacuum delay valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00311090A US3857373A (en) 1972-12-01 1972-12-01 Vacuum delay valve

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Application Number Title Priority Date Filing Date
US05/468,851 Division US3975609A (en) 1972-12-01 1974-05-10 Vacuum delay valve

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US3857373A true US3857373A (en) 1974-12-31

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US00311090A Expired - Lifetime US3857373A (en) 1972-12-01 1972-12-01 Vacuum delay valve

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US (1) US3857373A (enrdf_load_html_response)
JP (1) JPS4986710A (enrdf_load_html_response)
AU (1) AU473086B2 (enrdf_load_html_response)
CA (1) CA986386A (enrdf_load_html_response)
FR (1) FR2209406A5 (enrdf_load_html_response)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902469A (en) * 1973-11-07 1975-09-02 Stp Corp Vacuum delay valve
US3963042A (en) * 1974-08-21 1976-06-15 Robertshaw Controls Company Internal combustion engine control system and improved pneumatically operated temperature controlled valve construction therefor or the like
US4016853A (en) * 1974-08-21 1977-04-12 Robertshaw Controls Company Control system and improved pneumatically operated temperature controlled valve construction therefor or the like
US4098850A (en) * 1974-09-04 1978-07-04 Aisin Seiki Kabushiki Kaisha Orifice device for air flow restriction
US4100894A (en) * 1975-10-16 1978-07-18 Aisin Seiki Kabushiki Kaisha Flow restrictor
US4126084A (en) * 1973-10-11 1978-11-21 Masami Inada Ignition time adjuster for an internal combustion engine
US4241873A (en) * 1978-09-13 1980-12-30 Aisin Seiki Kabushiki Kaisha Temperature responsive valve device
US4241751A (en) * 1976-05-07 1980-12-30 Toyota Jidosha Kogyo Kabushiki Kaisha Vacuum transmitting valve
US4250707A (en) * 1977-12-23 1981-02-17 Fiat Auto S.P.A. Exhaust emission control system for internal combustion engines
EP0361226A3 (de) * 1988-09-26 1990-06-13 Daimler-Benz Aktiengesellschaft Verfahren zur dynamischen Korrektur des Zündzeitpunktes einer Brennkraftmaschine
US5736816A (en) * 1996-06-24 1998-04-07 Strenke; Leroy M. Automatic on-off vehicle headlight system
US5896882A (en) * 1996-06-27 1999-04-27 Northrop Grumman Corporation Pressure control valve
US20040134729A1 (en) * 2003-01-13 2004-07-15 Rose Mark M. Temperature responsive valve assembly for a pneumatic spring

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638626A (en) * 1970-07-06 1972-02-01 Ford Motor Co Engine spark timing control device
US3678907A (en) * 1970-07-30 1972-07-25 Ford Motor Co Engine spark timing system
US3698366A (en) * 1970-08-03 1972-10-17 Ford Motor Co Engine spark timing control system
US3699936A (en) * 1970-12-02 1972-10-24 Ford Motor Co Accelerator pump controlled engine spark timing
US3712279A (en) * 1970-12-02 1973-01-23 Ford Motor Co Vacuum spark advance cutoff
US3729132A (en) * 1971-01-25 1973-04-24 Bendix Corp Thermal control valve
US3730154A (en) * 1972-02-02 1973-05-01 Ford Motor Co Engine spark timing control

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3638626A (en) * 1970-07-06 1972-02-01 Ford Motor Co Engine spark timing control device
US3678907A (en) * 1970-07-30 1972-07-25 Ford Motor Co Engine spark timing system
US3698366A (en) * 1970-08-03 1972-10-17 Ford Motor Co Engine spark timing control system
US3699936A (en) * 1970-12-02 1972-10-24 Ford Motor Co Accelerator pump controlled engine spark timing
US3712279A (en) * 1970-12-02 1973-01-23 Ford Motor Co Vacuum spark advance cutoff
US3729132A (en) * 1971-01-25 1973-04-24 Bendix Corp Thermal control valve
US3730154A (en) * 1972-02-02 1973-05-01 Ford Motor Co Engine spark timing control

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4126084A (en) * 1973-10-11 1978-11-21 Masami Inada Ignition time adjuster for an internal combustion engine
US3902469A (en) * 1973-11-07 1975-09-02 Stp Corp Vacuum delay valve
US3963042A (en) * 1974-08-21 1976-06-15 Robertshaw Controls Company Internal combustion engine control system and improved pneumatically operated temperature controlled valve construction therefor or the like
US4016853A (en) * 1974-08-21 1977-04-12 Robertshaw Controls Company Control system and improved pneumatically operated temperature controlled valve construction therefor or the like
US4098850A (en) * 1974-09-04 1978-07-04 Aisin Seiki Kabushiki Kaisha Orifice device for air flow restriction
US4100894A (en) * 1975-10-16 1978-07-18 Aisin Seiki Kabushiki Kaisha Flow restrictor
US4241751A (en) * 1976-05-07 1980-12-30 Toyota Jidosha Kogyo Kabushiki Kaisha Vacuum transmitting valve
US4250707A (en) * 1977-12-23 1981-02-17 Fiat Auto S.P.A. Exhaust emission control system for internal combustion engines
US4241873A (en) * 1978-09-13 1980-12-30 Aisin Seiki Kabushiki Kaisha Temperature responsive valve device
EP0361226A3 (de) * 1988-09-26 1990-06-13 Daimler-Benz Aktiengesellschaft Verfahren zur dynamischen Korrektur des Zündzeitpunktes einer Brennkraftmaschine
US5736816A (en) * 1996-06-24 1998-04-07 Strenke; Leroy M. Automatic on-off vehicle headlight system
US5896882A (en) * 1996-06-27 1999-04-27 Northrop Grumman Corporation Pressure control valve
US20040134729A1 (en) * 2003-01-13 2004-07-15 Rose Mark M. Temperature responsive valve assembly for a pneumatic spring
US6959921B2 (en) * 2003-01-13 2005-11-01 Arvinmeritor Technology, Llc Temperature responsive valve assembly for a pneumatic spring

Also Published As

Publication number Publication date
AU6000573A (en) 1975-03-06
FR2209406A5 (enrdf_load_html_response) 1974-06-28
JPS4986710A (enrdf_load_html_response) 1974-08-20
CA986386A (en) 1976-03-30
AU473086B2 (en) 1976-06-10

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Effective date: 19820217

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