Dispositif de commande pour les appareils de désintoxication des gaz d'échappementdes moteurs à allumage commandé

摘要

1,161,632. Controlling vehicles. J. PUIG. 1 Sept., 1966 [8 Sept., 1965; 18 Oct., 1965], No. 39089/66. Heading B7H. [Also in Division F1] During overrunning the mixture intake pipe is completely closed by plates 6, 61, downstream of the throttle valve, the plates being controlled by an electromagnet 151 whose circuit includes a first means 5 responsive to throttle valve position and a second means 12 which re-opens the plates to prevent stalling when the engine speed drops to nothing. A stop 17 controlled by a device 13 responsive to vehicle speed prevents the plates opening beyond a partially open position until vehicle speed reaches a predetermined value. The means 5 comprises a plate 23, Fig. 7, freely pivotable on the throttle spindle and actuated through a friction clutch. When the accelerator pedal is depressed, plate 23 is moved away from abutment 24 and against abutment 25, breaking switch 51, a toggle spring 33 ensuring rapid movement. When the pedal is released, plate 23 returns to close switch 51, energizing electromagnet 151 to close plates 6, 61. The vehicle speed responsive device 13 controls a switch in the circuit of electromagnet 141 controlling stop 17. The device 13 comprises an A.C. generator driven by the speedometer cable, the output of which is rectified and applied to the coil of a relay which closes the circuit of electromagnet 141 at a predetermined vehicle speed, withdrawing stop 17 to. allow plates 6, 61 to move to the full open position. The electromagnetic devices may be replaced by pneumatic or hydraulic actuating means. In Fig. 2 the vehicle speed responsive device 13 controls partial or full opening of a first restriction means 6, 61, and the accelerator and engine speed-responsive devices 5, 12, control complete closing of a second restriction means 20. In Fig. 4 the device 13 controls the restriction plates 6, 61, in the mixture conduit whilst the devices 5, 12, control closing or opening of a valve in the idle fuel passage of the carburetter.