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81. 发明专利

SE7614400L 未知
公开(公告)号：SE7614400L
公开(公告)日：1976-12-21
申请号：SE7614400
申请日：1976-12-21
申请人： TEXAS INSTRUMENTS INC
发明人： ARMSTRONG J J
IPC分类号： F02D9/02 , F02M1/08 , F02M1/12 , F02M23/10 , F02M51/00 , H05B3/12
摘要： An improved automotive choke control reduces the pollutant content of automotive exhaust gasses by regulating a choke to supply fuel-enriched air-fuel mixtures to an internal combustion engine or motor only while such enriched mixtures are necessary to facilitate motor starting and to supply leaner air-fuel mixtures to the motor as soon as the motor is able to utilize the leaner mixtures while the motor is being heated to its normal operating temperature. In the control, a thermostat metal coil is arranged to move and to open a choke valve as the coil is heated. Two self-regulated electrical resistance heaters are thermally coupled to the thermostat metal coil for heating the coil to open a choke at selected rates, one heater being arranged to be energized when motor operation is first started for assuring that opening of the choke is initiated promptly after motor starting particularly at lower ambient temperatures and for assuring that opening of the choke proceeds at least at a selected rate, and the other heater being arranged to be energized upon actuation of a thermostatic switch at ambient temperatures above a selected level for opening the choke at a relatively faster rate and for assuring that full opening of the choke is completed promptly after the motor has reached its normal operating temperature particularly at higher ambient temperatures. Also shown is a novel and advantageous heater element having two portions arranged to serve as separate heaters in the control device.

82. 发明专利

GB1427981A INTERNAL COMBUSTION ENGINES HAVING FUEL INJECTION 未知
公开(公告)号：GB1427981A
公开(公告)日：1976-03-10
申请号：GB1117373
申请日：1973-03-07
申请人： BOSCH GMBH ROBERT
IPC分类号： F02D41/34 , F02D41/30 , F02M23/10 , F02M51/02 , F02M69/32 , F02D9/16
摘要： 1427981 Throttle valve by-pass passage valves ROBERT BOSCH GmbH 7 March 1973 [8 March 1972] 11173/73 Heading F1B Fuel injection I.C. engine has a throttle valve in its inlet manifold for controlling the engine speed and a by-pass passage around the throttle valve in which is a further valve comprising a blade member pivotally mounted to move in a plane transverse to the passage and about an axis eccentric relative to the passage, the blade being moved by the action of a bi-metal spring, to a position in which it at least partially blocks the passage, in dependence upon the temperature of the spring. The engine has electromagnetically operated injection valves in the inlet manifold, one per cylinder, close to the inlet valves. A transistorized circuit device 25 controls the period of time during which fuel is injected, in response to the inlet manifold vacuum, which is detected by a diaphragm in housing 41. The by-pass passage consists of pipes 51 and 52 and a blade 55 which is movable between their opposing ends. Blade 55 is mounted on pivot pin 56 and biased by a tension spring 67 so that projection 66 of the blade bears against free end 65 of bi-metal spring 60, the other end of which is fixed in terminal block 61. The ends of electrical heater winding 64 are connected to terminal pins 62 in block 61. When spring 60 is cold, blade 55 is in a position such that window 83 is in line with the pipes. As the spring temperature increases, the spring bends away from projection 66 and tension spring 67 pivots the blade to move the window out of alignment with the pipes. Provision is made for adjusting the initial position of the plate 55, by mounting the pivot pin 56 in a support plate 70, part 72 of which has slot 73 through which passes locking screw 74. A narrow sealing lip 79 is formed on the support plate 70 and the plate 55 is drawn against this lip by the manifold depression. In a first modification, Figs. 4 and 5 (not shown) the support plate is omitted and the pivot pin 56 is mounted in an end-plate which closes the open end of a sheet metal tube and housing which contain the bi-metal spring and plate 55. In a second modification Fig. 6, (not shown) a die cast aluminium casing is used, the pipes 51 and 52 are integral with the casing and project to the same side of the casing. A U-bend is provided to connect the ends of the pipes corresponding to the opposing ends in the previous embodiments. In a third modification, Figs. 7 and 8 (not shown) blade 55 is mounted in a plane which is parallel to the direction of movement of the bi-metal spring and a lug secured to the end of the spring projects into this plane to engage the part 66 of the blade 55. In a fourth modification, Fig. 9 (not shown) the tension spring 67 is omitted and the bi-metal spring is connected to the part 66 by a pivoted link. In a fifth modification, Figs. 10 and 11 (not shown), the construction closely resembles that of Figs. 2 and 3, but provision is made for rotating the block 61 holding the end of the bi-metal spring to set the initial posision of the plate 55 by altering the force exerted on it by the free end of the bi-metal spring. The Specification also states that the arrangement can be reversed so that as the temperature increases the force exerted by the bi-metal spring increases and the tension of the spring 67 is increased.

83. 发明专利

DE2443977A1 未知
公开(公告)号：DE2443977A1
公开(公告)日：1975-03-13
申请号：DE2443977
申请日：1974-09-12
申请人： ZENITH CARBURETTER CO LTD
发明人： ROSS GRAY ERNEST DONALD
IPC分类号： F02D33/00 , F02M1/04 , F02M23/10 , F02M1/10
摘要： An internal combustion engine cold start device has an air valve which co-operates with a valve seat to vary the cross-sectional area of an auxiliary air supply passage upstream of a plug valve in the passage. The air valve is urged towards the valve seat by coil spring. A fuel metering orifice communicates with the passage between the two valves. The plug valve has a profiled valve member which is linked to a profiled needle which projects into the fuel metering orifice, the needle and the plug valve member being guided for rectilinear movement together along parallel paths to respectively throttle the passage and vary the area of the metering orifice. A coil spring opposes rectilinear movement of the plug valve member and the needle to reduce flow through the passage and the orifice respectivey. A thermostatically controlled movable stop co-operates with the linkage which links the plug valve member and the needle so as to limit the permitted movement of the plug valve member and the needle together against the action of the coil spring and to increase that permitted movement as the temperature of the engine increases. In one embodiment the air valve and the plug valve are coaxial, the air valve being annular and being guided by a rod which carries the plug valve member. In another embodiment the air valve is carried by a plunger which slides in a through bore in the body of the device, the through bore being parallel to the plug valve path and communicating with the passage downstream of the plug valve.

84. 发明专利

DE2329539A1 未知
公开(公告)号：DE2329539A1
公开(公告)日：1975-01-02
申请号：DE2329539
申请日：1973-06-09
申请人： BOSCH GMBH ROBERT
发明人： LINDER ERNST DIPL ING , ZECHNALL RICHARD DIPL ING DR
IPC分类号： F01N3/22 , F01N3/30 , F01N9/00 , F01N13/02 , F02D41/14 , F02M23/10 , F02D35/00

85. 发明专利

BE811875A 未知
公开(公告)号：BE811875A
公开(公告)日：1974-09-05
申请号：BE141643
申请日：1974-03-05
IPC分类号： F02B19/10 , F02M23/04 , F02M23/10 , F02N99/00 , F02B
摘要： 1465582 Treating IC engine charges HONDA GIKEN KOGYO KK 5 March 1974 [6 March 1973] 9861/74 Heading F1B An I.C. engine having a cylinder provided with a main combustion chamber communicating via a flame passage with a pre-combustion chamber, has means for feeding a fuel-air mixture to the main chamber and a richer fuel-air mixture to the precombustion chamber and has an extra-air valve 15 which admits air to the air intake passage 7 if the engine is re-started while hot. The extra air compensates for over-richness of the mixture due to evaporation of fuel previously deposited on the passage walls. Valve-member 16 is spring-biased to a closed position and is moved to an open position when solenoid 17 is energized. The electrical circuit of the solenoid comprises battery 20, ignition switch 23, starter switch 25 and a switch 18 controlled by a device responsive to engine temperature so that it is only closed when the engine is hot.

86. 发明专利

GB1363332A METHOD AND APPARATUS FOR REDUCING THE CONCENTRATIONS OF TOXIC COMPOUNDS IN EXHAUST GASES FROM AN INTERNAL COMBUSTION ENGINE 未知
公开(公告)号：GB1363332A
公开(公告)日：1974-08-14
申请号：GB3824372
申请日：1972-08-16
申请人： NISSAN MOTOR
IPC分类号： F02D41/02 , F01N3/20 , F02D9/00 , F02D41/14 , F02M1/10 , F02M3/07 , F02M7/00 , F02M7/04 , F02M7/133 , F02M23/10 , F01N3/10 , F02M7/12
摘要： 1363332 Treating exhaust gas NISSAN MOTOR CO Ltd 16 Aug 1972 [28 Dec 1971] 38243/72 Heading F1B A method for reducing noxious compounds contained in I.C. engine exhaust gas, comprising detecting the temperature of an exhaust gas treating device associated with the engine, or of the gas therein and controlling the air-fuel ratio of the mixture supplied to the engine in dependence on the detected temperature to maintain optimum efficiency of the treatment device. An apparatus for carrying out the method consists of an engine 10 supplied with an air-fuel mixture by a carburettor 12 through an induction manifold 18. An exhaust manifold 20 leads to an exhaust gas treating device 42. Warm air can be supplied to the engine by opening a valve 34 so that the induced air entering a pipe 38 passes over the manifold 20. The valve 34 is actuated by intake manifold vacuum acting on a diaphragm 36 through a conduit 38, a temperature responsive valve 40 being fitted in the conduit. The air-fuel ratio is controlled by varying the position of a choke valve 22, which is connected by a rod 56 to a diaphragm 52, acted on by a compression spring 54 which tends to close the valve 22. One side 50a of the diaphragm is connected by a duct 70 to a chamber 64 which is connected by a pipe 66 to the inlet manifold, so that when manifold vacuum is high, the choke valve 22 is opened. A partition wall 72 in the chamber has an opening 72a which is opened or closed by a thermostatic valve 76, responsive to the temperature of the water in the cooling jacket 78. When the water temperature is low, the valve 76 is open and atmospheric air enters by a vent 74 to break the vacuum on the diaphragm 52. A further pipe 80 communicates with the chamber 64 and through a restrictor 82 with an atmospheric vent. A solenoid-actuated valve member 84a controls the admission of air to the pipe 80, the solenoid circuit including a temperature responsive switch 86, connected in series with the ignition switch 88 to a battery 90. The switch 86 energizes the solenoid 84b when the exhaust gas temperature is low so that the valve member 84a is withdrawn, air enters the pipe 80 to reduce the vacuum acting on the diaphragm 54 and the choke valve 22 partially closes to enrich the mixture, so that more unburnt compounds reach the treating device and its operating temperature is increased to the optimum value. A further embodiment of the apparatus modifies the air-fuel ratio by making use of a power valve assembly provided in the carburetter, Fig. 2. The main nozzle of the carburetter draws fuel from a float chamber 112 through a main jet 120, emulsifying air being metered by a jet 122b. Idling and slow-running mixture issues from a port 114, the fuel being metered by a jet 126a and air being metered by jets 126, 126b and 126c. A power jet 134 supplies additional fuel to the main nozzle passage 108, when the valve 136 is open. The valve 136 is connected by a rod 140 to a vacuum piston 142 which slides in a vacuum cylinder 144, connected by a duct 154 to a point in the intake manifold downstream of the throttle valve 102. When the manifold pressure is high, valve 136 is opened by spring 148. The vacuum cylinder is also connected by a pipe 156 and through a restrictor 156a to a two-way solenoid-actuated valve 164, which is energized via a temperature responsive switch 86. When the treating device 42 is operating at low temperature, the solenoid is energized and pipe 156 is connected to an atmospheric vent 158, so that the pressure in cylinder 144 rises, the valve 136 opens and additional fuel is supplied to the main nozzle. When the device 42 is at too high a temperature the solenoid is de-energized and moves the valve so that vent 158 is only connected to pipe 160, and air is admitted to the engine through the slow running port 114. At the same time, the valve 136 is closed by the intake manifold vacuum acting on the piston 144.

87. 发明专利

BR7301653D0 未知
公开(公告)号：BR7301653D0
公开(公告)日：1974-06-27
申请号：BR165373
申请日：1973-03-02
申请人： BOSCH GMBH ROBERT
发明人： MERZ G , SPATH W , REICHART F , OHL H , HOELLE H , FEHRENBACH S , BAUER M , SCHAFT D
IPC分类号： F02D41/34 , F02D41/30 , F02M23/10 , F02M51/02 , F02M69/32

88. 发明专利

DE1576548A1 未知
公开(公告)号：DE1576548A1
公开(公告)日：1970-05-27
申请号：DE1576548
申请日：1967-05-26
申请人： FORD WERKE AG
发明人： W CHARRON WILLIAM
IPC分类号： F02M1/00 , F02M19/08 , F02M23/04 , F02M23/10

89. 发明专利

GB1174980A Carburettors for Motor Vehicles 未知
公开(公告)号：GB1174980A
公开(公告)日：1969-12-17
申请号：GB1252067
申请日：1967-03-17
申请人： FORD MOTOR CO
IPC分类号： F02M1/00 , F02M19/08 , F02M23/04 , F02M23/10
摘要： 1,174,980. Spray carburetters. FORD MOTOR CO. Ltd. March 17, 1967 [June 22, 1966], No.12520/67. Heading F1B. A valve 36 in a secondary air by-pass 34, operated by a swinging weight 41, closes upon acceleration or when the vehicle is ascending a hill to increase the fuel-air ratio. Closing of the valve 36 increases the suction in the Venturi 26 and hence increases the fuel supply. The shaft of valve 37 is connected to the weight 41 through a bi-metallic element 42 which, for given portion of weight 41, varies the position of valve 36 in accordance with temperature to decrease the fuel-air ratio as temperature increases. Valve 36 is also operative upon deceleration to reduce the fuel-air ratio.

90. 发明专利

GB798532A Improvements relating to arrangements for regulating the idling air supplied to internal combustion engines 未知
公开(公告)号：GB798532A
公开(公告)日：1958-07-23
申请号：GB2629956
申请日：1956-08-28
申请人： DAIMLER BENZ AG
IPC分类号： F02M1/10 , F02M3/12 , F02M23/10
摘要： 798,532. Regulating. DAIMLER-BENZ AKT.-GES. Aug. 28, 1956 [Aug. 29, 1955], No. 26299/56. Class 7(6) A thermostat 8 displaces a throttling member 7 in an idling air passage 5 of an injection type engine in the opening direction upon increase in temperature of the combustion air and also simultaneously effects a reduction in the quantity of fuel. Two idling-air passages 4, 5 are provided in parallel, the passage 4 being controlled by a manually adjustable screw 6 and having positioned therein the thermostat 8 which actuates valve 7 to close the passage 5 at low temperatures and open it at high temperatures, thereby maintaining the weight of idling air constant. The fuel supply is controlled by a suction governor connected, by a suction pipe 12, to a main tapping point 10 downstream of the throttle valve 3 and a correcting tapping point 11 upstream of the valve 3 connected to the point 11 by a passage 15. A by-pass 16 to the passage 15 is controlled by an extension of the valve 7 and is closed when the valve 7 opens the idling duct 5, thereby increasing the suction in pipe 12 and producing a slight reduction in the fuel supply. A second by-pass 13 interconnecting the points 11, 10, is opened as the throttle valve 3 is opened.

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