GB549573A - Improvement in variable speed power transmission mechanism - Google Patents
Improvement in variable speed power transmission mechanismInfo
- Publication number
- GB549573A GB549573A GB4696/41A GB469641A GB549573A GB 549573 A GB549573 A GB 549573A GB 4696/41 A GB4696/41 A GB 4696/41A GB 469641 A GB469641 A GB 469641A GB 549573 A GB549573 A GB 549573A
- Authority
- GB
- United Kingdom
- Prior art keywords
- switch
- diaphragm
- accelerator
- speed
- solenoid
- 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
- 230000005540 biological transmission Effects 0.000 title abstract 6
- 230000000994 depressogenic effect Effects 0.000 abstract 3
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 239000012530 fluid Substances 0.000 abstract 1
- 238000004804 winding Methods 0.000 abstract 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W30/00—Purposes of road vehicle drive control systems not related to the control of a particular sub-unit, e.g. of systems using conjoint control of vehicle sub-units
- B60W30/18—Propelling the vehicle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/04—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units
- B60W10/06—Conjoint control of vehicle sub-units of different type or different function including control of propulsion units including control of combustion engines
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W10/00—Conjoint control of vehicle sub-units of different type or different function
- B60W10/10—Conjoint control of vehicle sub-units of different type or different function including control of change-speed gearings
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60W—CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION; CONTROL SYSTEMS SPECIALLY ADAPTED FOR HYBRID VEHICLES; ROAD VEHICLE DRIVE CONTROL SYSTEMS FOR PURPOSES NOT RELATED TO THE CONTROL OF A PARTICULAR SUB-UNIT
- B60W2710/00—Output or target parameters relating to a particular sub-units
- B60W2710/10—Change speed gearings
- B60W2710/1005—Transmission ratio engaged
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Automation & Control Theory (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
549,573. Fluid-pressure servomotor-control systems. BENDIX AVIATION CORPORATION. April 8, 1941, No. 4696. Convention date, May 13, 1940. [Class 135] [Also in Groups XXIV and XXXVII] In a change speed gearing for automotive vehicles, speed changes are effected by a servomotor controlled by a speed governor and by movement of the accelerator pedal, the engine ignition mechanism being disabled during speed changing. As shown, a shaft 14, Fig. 1, may be driven at either of two speeds by gears 194,200, which are rendered operative by a synchronizing clutch member 196 actuated by a shifter rail 56. The two speed gear drive shown may be used in series with a manually actuated variable speed gear, and a fluid coupling may be embodied in the transmission. The rail 56 is connected by links 52, 50, 36 to the diaphragm 34, Fig. 5, of a servomotor 35 which has a valve 98, actuated by a solenoid 94. An ignition interruptor switch 22 is associated with the servomotor 35. The solenoid 94 and switch 22 are electrically connected to a vehicle speed responsive switch 24, an accelerator switch 26 and the primary winding 28 of an ignition coil 30 of a distributer 31. The link 36 telescopes with a sleeve 38, Fig. 5, fixed to the diaphragm 34, a spring 44 acting between a nut 48 on the link 36 and a nut 46 clamping the diaphragm 34. The latter is urged to the left, Fig. 5, by a spring 90, and is moved to the right when the solenoid 94 is de-energized, the valve 98 then falling and connecting the motor compartment 91 to the engine intake manifold. When the solenoid 94 is energized the diaphragm moves to the left under the action of the spring 90, the compartment 91 then being open to the atmosphere. The sleeve 38 has a pair of grooves 239, 240 ; the groove 239 co-operates with a latch 100 on the valve 98, and the groove 240 permits the switch 22 to open when the diaphragm is in its extreme right-hand position. The governor controlled switch includes two pairs of sectorshaped plates 124, 125, Fig. 12, tied together by pins 126, 127, and pivoted to a plate 128 driven in accordance with the speed of the vehicle. A bowed spring 142 is positioned between abutments carried by members 143 adjustably mounted on the plates 124, 125. The switch 24 which is similar in form to that described in U.S.A. Specification 1,960,020 includes a contact member 135. At low vehicle speeds the switch is closed. As the vehicle speed increases the plates 124, 125, move and flex the spring 142 which acts on the member 135 to move the latter away from the terminal 138 and open the switch. The accelerator switch 26 is normally open, but is closed by movement of a lever 110 when the accelerator 20 is fully depressed. Operati,on.-When the vehicle is at a standstill the switch 24 is closed, the solenoid 94 is energized, the diaphragm 34 is in its left-hand position and the transmission mechanism is in low gear, as shown in Fig. 1. As the vehicle speed increases the switch 24 opens and the solenoid 94 is de-energized. As the throttle valve is open the vacuum in the motor compartment 91 is not sufficient to move the diaphragm 34 to the right. When the vehicle reaches the desired speed the accelerator is released whereupon the increased vacuum which results causes the servomotor to act and the shifter rail 56 is moved to introduce high gear. The latch 100 then engages the groove 239 on the sleeve 38 and holds the diaphragm 34 in its right-hand position against the action of the spring 90; the accelerator may again be depressed without causing operation of the servomotor. If the accelerator is fully depressed, a stop 241 on the link 104 moves the lever 110 to close the switch 26. The solenoid is thus energized, the latch 100 is released, and the diaphragm 34 moves to the left to introduce low gear transmission. During this movement a portion 76 of the sleeve 38 engages the switch 22 and closes it. Thus the ground connection to the breaker switch 147 is completed and the engine ignition is interrupted. The length of the part 76 is such that synchronism of the gear parts occurs before the switch 22 is again opened. The transmission remains in low gear until the accelerator has been released sufficiently to again energize the motor 35 and introduce high gear transmission.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US549573XA | 1940-05-13 | 1940-05-13 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB549573A true GB549573A (en) | 1942-11-27 |
Family
ID=21994616
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB4696/41A Expired GB549573A (en) | 1940-05-13 | 1941-04-08 | Improvement in variable speed power transmission mechanism |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB549573A (en) |
-
1941
- 1941-04-08 GB GB4696/41A patent/GB549573A/en not_active Expired
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