GB1454419A - Pilot valve for use in an exhaust gas recirculation - Google Patents
Pilot valve for use in an exhaust gas recirculationInfo
- Publication number
- GB1454419A GB1454419A GB5951273A GB5951273A GB1454419A GB 1454419 A GB1454419 A GB 1454419A GB 5951273 A GB5951273 A GB 5951273A GB 5951273 A GB5951273 A GB 5951273A GB 1454419 A GB1454419 A GB 1454419A
- Authority
- GB
- United Kingdom
- Prior art keywords
- valve
- pressure
- exhaust gas
- diaphragm
- flow
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/52—Systems for actuating EGR valves
- F02M26/55—Systems for actuating EGR valves using vacuum actuators
- F02M26/56—Systems for actuating EGR valves using vacuum actuators having pressure modulation valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/66—Lift valves, e.g. poppet valves
- F02M26/68—Closing members; Valve seats; Flow passages
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/65—Constructional details of EGR valves
- F02M26/72—Housings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/45—Sensors specially adapted for EGR systems
- F02M26/46—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition
- F02M26/47—Sensors specially adapted for EGR systems for determining the characteristics of gases, e.g. composition the characteristics being temperatures, pressures or flow rates
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
1454419 Exhaust gas recirculation control valve BENDIX CORP 21 Dec 1973 [26 Dec 1972] 59512/73 Heading F1B [Also in Division G3] Exhaust gas recirculation system for I.C. engines comprises a pilot valve which includes first pressure differential responsive means adapted to be exposed to ambient air pressure and to a pressure which varies as a function of engine air-flow and which, in use, generates a first force, second pressure differential responsive means adapted to be exposed to pressure signals whose difference is representative of the circulated exhaust gas flowrate and which, in use, generates a second force, and means for summing said forces, said means being operative to wave a piston member and thereby modulate in accordance with the intensity of the combined forces a signal for controlling the relative opening and closing of an exhaust gas recirculating valve, the modulated control signal providing said valve with a regulation such that the volume of exhaust gas being recirculated to the engines intake manifold varies in a proportion related to the engine air-flow. Valve 20 has a connection 48 to the Venturi of carburetter 41 and a connection 115 to a point downstream of the Venturi and upstream of the throttle valve 46. Fig. 2 shows the exhaust gas recirculation passage which is connected to valve 20 by pipes 37 and 36 which communicate the pressures 52 and 53 in the passage and in a Venturi 35 respectively to the valve. A valve 38 controls the amount of exhaust gas recirculated and is actuated by a diaphragm 13, one side of which is subject to atmospheric pressure and the other side of which is subject to a pressure Sx in pipe 16 connected to valve 20, which regulates the amount of exhaust gas recirculated in a predetermined relationship to engine air-flow. Operation. When engine air-flow is small but increasing, pressure Si from the carburetter Venturi will be less than atmospheric and decreasing. This pressure acts on diaphragm 170, which is subject to atmospheric pressure on its other side, and through passageway 21c' on diaphragm 80. A spring 227 holds valve 225 against seat 226 at small air-flows, so that pressures Sy and S 1 are equal. As air-flow increases, diaphragm 80 is lifted and tends to close valve 27 against seat 92, thus closing off a passageway 91 which communicates with atmosphere through chamber 22d, below diaphragm 80, and passageway 21d'. The pressure Sx then tends more towards the manifold pressure Pw which is established in chamber 122 by connection 115, and pressure Sx acts on diaphragm 13 to open valve 18. Pressures S 2 and S 3 , of which S 3 will be the smaller act on opposite sides of diaphragm 60 and produce a downward force in addition to a downward force caused by the difference between pressures S 3 and Sy which act on opposite sides of diaphragm 70. This downward force tends to move valve 27 on to seat 93, thus reducing the influence of manifold pressure on Sx and tending to reduce the flow of recirculated exhaust gas. The rate of flow of exhaust gas is ultimately limited by an orifice 39 downstream of valve 18, the difference between pressures S 2 and S 3 is no longer sufficient to balance the forces on valve assembly 23 and valve 27 engages seat 92. The reservior 122 which includes check-valve 124 then acts to maintain pressure Sx at a low level, although manifold pressure may vary, thus maintaining the flow of recirculated exhaust gas. As engine air-flow continues to increase, diaphragm 170 is pulled down and valve member 235 engages seat 236, pressure Sy becomes equal to atmospheric pressure, via air opening 229 and passage 221c', valve member 27 closes on to seat 93 and pressure Sx becomes equal to atmospheric so that recirculation valve 18 closes. In a modification a bi-metal spring acts on valve assembly 223 to inhibit recirculation of exhaust gas at predetermined engine or engine bay temperatures.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US00318150A US3814070A (en) | 1972-12-26 | 1972-12-26 | Exhaust gas recirculation flow control system |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1454419A true GB1454419A (en) | 1976-11-03 |
Family
ID=23236881
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB5951273A Expired GB1454419A (en) | 1972-12-26 | 1973-12-21 | Pilot valve for use in an exhaust gas recirculation |
Country Status (8)
Country | Link |
---|---|
US (1) | US3814070A (en) |
JP (1) | JPS572901B2 (en) |
AU (1) | AU476179B2 (en) |
CA (1) | CA987559A (en) |
DE (1) | DE2364712C2 (en) |
FR (1) | FR2211971A5 (en) |
GB (1) | GB1454419A (en) |
IT (1) | IT1002267B (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2204915A (en) * | 1987-05-12 | 1988-11-23 | Ford Motor Co | I.c. engine exhaust gas recirculation control |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3924589A (en) * | 1973-03-17 | 1975-12-09 | Toyota Motor Co Ltd | Exhaust gas recirculating apparatus |
IT996383B (en) * | 1973-05-10 | 1975-12-10 | Pierburg Kg A | CONTROL DEVICE FOR THE RETURN OF EXHAUST GAS IN THE INTAKE PIPES OF AN INTERNAL COMBUSTION ENGINE |
JPS5060627A (en) * | 1973-10-02 | 1975-05-24 | ||
US3915136A (en) * | 1974-02-25 | 1975-10-28 | Ranco Inc | Control system for exhaust gas recirculating valve |
US4022237A (en) * | 1974-02-28 | 1977-05-10 | The Bendix Corporation | Exhaust gas recirculation flow control system |
US3926161A (en) * | 1974-02-28 | 1975-12-16 | Bendix Corp | Exhaust gas recirculation flow control system |
JPS5234687B2 (en) * | 1974-06-24 | 1977-09-05 | ||
JPS5345857B2 (en) * | 1974-06-24 | 1978-12-09 | ||
JPS5235822B2 (en) * | 1974-06-25 | 1977-09-12 | ||
JPS5345858B2 (en) * | 1974-06-27 | 1978-12-09 | ||
GB1520933A (en) * | 1975-01-22 | 1978-08-09 | Nissan Motor | Multiple spark ignition internal combustion engine with exhaust gas recirculation |
JPS555745Y2 (en) * | 1975-06-13 | 1980-02-08 | ||
JPS521324A (en) * | 1975-06-24 | 1977-01-07 | Toyota Motor Corp | Exhaust gas recirculation apparatus |
US4071006A (en) * | 1975-08-12 | 1978-01-31 | Nissan Motor Co., Ltd. | Exhaust gas recirculating system |
JPS5610901Y2 (en) * | 1975-09-06 | 1981-03-12 | ||
JPS5290729A (en) * | 1976-01-23 | 1977-07-30 | Nissan Motor Co Ltd | Exhaust gas recirculation control device |
JPS52139916U (en) * | 1976-04-19 | 1977-10-24 | ||
JPS53323A (en) * | 1976-06-23 | 1978-01-05 | Nissan Motor Co Ltd | Exhaust circulation control system |
US4148286A (en) * | 1976-10-01 | 1979-04-10 | Nippon Soken, Inc. | Exhaust gas recirculation system for an internal combustion engine |
US4130094A (en) * | 1977-08-03 | 1978-12-19 | Ford Motor Company | Exhaust gas recirculation valve assembly |
JPS552827A (en) * | 1978-06-20 | 1980-01-10 | Hitachi Ltd | Solenoid valve |
US4248186A (en) * | 1978-09-29 | 1981-02-03 | Hitachi, Ltd. | Exhaust gas recirculation control system |
JPS5672250A (en) * | 1979-11-15 | 1981-06-16 | Honda Motor Co Ltd | Controller for exhaust gas recirculation in engine |
US5203313A (en) * | 1992-06-19 | 1993-04-20 | Bundy Corporation | EGR venturi coupler |
US5255659A (en) * | 1992-09-28 | 1993-10-26 | Ford Motor Company | Pressure balanced exhaust gas recirculation valve |
CN108979906B (en) * | 2018-08-03 | 2020-11-20 | 潍柴动力股份有限公司 | EGR valve and engine |
FR3142268A1 (en) | 2022-11-17 | 2024-05-24 | Psa Automobiles Sa | Managing the functionalities of a motor vehicle using a gesture-driven human-machine interface |
CN116175990B (en) * | 2023-04-24 | 2023-07-11 | 国营川西机器厂 | Device and method for solving oil leakage faults of aeroengine parting film |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2364712A (en) * | 1942-10-10 | 1944-12-12 | Harvel Res Corp | Condensation products of phenols and phenolic ethers, and method of preparing the same |
US3507260A (en) * | 1967-05-01 | 1970-04-21 | Brooks Walker | Exhaust recirculation control for an engine |
GB1262252A (en) * | 1969-01-20 | 1972-02-02 | Nissan Motor | Exhaust recirculation system for motor vehicles |
US3648672A (en) * | 1969-08-10 | 1972-03-14 | Toyo Kogyo Co | Device for purifying the exhaust gas of an internal combustion engine to reduce the nitrogen oxide content |
US3581719A (en) * | 1969-10-30 | 1971-06-01 | Chrysler Corp | Fluidic exhaust recirculator for two stroke cycle engines |
US3643425A (en) * | 1970-02-12 | 1972-02-22 | Exxon Research Engineering Co | Low-polluting internal combustion engine wherein secondary air is injected into the exhaust ports |
DE2011464C3 (en) * | 1970-03-11 | 1976-01-08 | Volkswagenwerk Ag, 3180 Wolfsburg | Internal combustion engine with exhaust gas recirculation |
US3662722A (en) * | 1970-04-22 | 1972-05-16 | Chrysler Corp | Cool exhaust recycling |
US3741179A (en) * | 1971-07-01 | 1973-06-26 | Ford Motor Co | Exhaust gas recirculating system control |
JPS527494A (en) * | 1975-07-01 | 1977-01-20 | Nagata Jozo Kikai Kk | Method of making malted rice by supplying water and nutrients during c ultivation |
-
1972
- 1972-12-26 US US00318150A patent/US3814070A/en not_active Expired - Lifetime
-
1973
- 1973-10-22 CA CA183,923A patent/CA987559A/en not_active Expired
- 1973-12-21 GB GB5951273A patent/GB1454419A/en not_active Expired
- 1973-12-21 AU AU63891/73A patent/AU476179B2/en not_active Expired
- 1973-12-26 JP JP744669A patent/JPS572901B2/ja not_active Expired
- 1973-12-26 FR FR7346223A patent/FR2211971A5/fr not_active Expired
- 1973-12-27 DE DE2364712A patent/DE2364712C2/en not_active Expired
- 1973-12-27 IT IT32153/73A patent/IT1002267B/en active
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2204915A (en) * | 1987-05-12 | 1988-11-23 | Ford Motor Co | I.c. engine exhaust gas recirculation control |
Also Published As
Publication number | Publication date |
---|---|
DE2364712A1 (en) | 1974-06-27 |
FR2211971A5 (en) | 1974-07-19 |
AU476179B2 (en) | 1976-09-16 |
IT1002267B (en) | 1976-05-20 |
JPS4996134A (en) | 1974-09-11 |
DE2364712C2 (en) | 1982-03-25 |
US3814070A (en) | 1974-06-04 |
CA987559A (en) | 1976-04-20 |
AU6389173A (en) | 1975-06-26 |
JPS572901B2 (en) | 1982-01-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed [section 19, patents act 1949] | ||
PCNP | Patent ceased through non-payment of renewal fee |