| 摘要 |
1530908 Spray carburetters HONDA GIKEN KOGYO KK 5 Nov 1975 [6 Nov 1974] 45949/75 Heading F1H A carburetter passage 10 for supplying mixture to at least one main engine combustion chamber 67 and a passage 11 for supplying a richer mixture to at least one pre-combustion chamber 68 have respective choke valves 12 and 13. A lever 22 fixed to the choke shaft 21 has an abutment 25 which is urged into engagement with a lever 23 rotatable on the shaft and having a lost-motion connection 58, 59 to a lever 51 rotatable on the choke shaft 48. The lost-motion connection may be provided by a bi-metal coil (76), Fig. 3 (not shown), having a shoulder (80) engaging the lever 23 and an outer end (79) engageable with the rod 58. A lever 24 rotatable on the shaft 21 and engageable with the abutment 25 is connected to a diaphragm actuator 36 subject to the vacuum in the passage 10 downstream of the throttle valve 14 to ensure at least partial opening of the valves 12 and 13 on steady running of the engine with the throttle valve undepressed, the lever 23 being connected to a lever 52 rotatable on the shaft 48 and engageable with an abutment 53 on a lever 50 fixed to the shaft. The abutment 53 is urged into engagement with the lever 52 by the spring 54. The lever 23 is operable by the knob 34 and wire 35 from a position d in which the valve 12 is maintained open by the spring 29 to a position e in which the valve is fully closed. From position e to position f the spring 26 permits further movement of lever 23 and the rod 58 moves lever 51 to fully close the valve 13 via the spring 54. Movement to position g loads the springs 26 and 54. Abutment 40 in the actuator 36 provides predetermined openings of the valves 12 and 13 from their fully closed positions. |
