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Electronic-hydraulic control device of an automatic automobile transmission in which all of the solenoid valves (12) and pressure control valves (6, 7, 8, 9, 10, 11) are de-energized when the electronic control device fails and in which a lower gear, preferably third gear, is automatically selected

Electronic-hydraulic control device of an automatic automobile transmission in which all of the solenoid valves (12) and pressure control valves (6, 7, 8, 9, 10, 11) are de-energized when the electronic control device fails and in which a lower gear, preferably third gear, is automatically selected when a lower gear has been previously engaged, and a higher gear, preferably fifth gear, is selected when a higher gear has been engaged previously. The control valves (20, 21, 23) have surfaces of different dimensions that can be controlled jointly or individually to permit a variety of valve characteristic curves.

대표청구항 ▼

Electronic-hydraulic control device of an automatic automobile transmission in which all of the solenoid valves (12) and pressure control valves (6, 7, 8, 9, 10, 11) are de-energized when the electronic control device fails and in which a lower gear, preferably third gear, is automatically selected

Electronic-hydraulic control device of an automatic automobile transmission in which all of the solenoid valves (12) and pressure control valves (6, 7, 8, 9, 10, 11) are de-energized when the electronic control device fails and in which a lower gear, preferably third gear, is automatically selected when a lower gear has been previously engaged, and a higher gear, preferably fifth gear, is selected when a higher gear has been engaged previously. The control valves (20, 21, 23) have surfaces of different dimensions that can be controlled jointly or individually to permit a variety of valve characteristic curves. t according to claim 13, wherein said coolant further comprises water mixed together with said glycol. 15. The watercraft of claim 1, wherein the ride plate includes a partial intake opening that cooperates with an intake opening in the hull to the tunnel to allow water to be drawn into the propulsion system. 16. The watercraft of claim 15, wherein the partial intake opening is defined by an edge of the ride plate. 17. The watercraft of claim 1, wherein the ride plate has a lower solid plate-like surface of the heat conductive material. 18. The watercraft of claim 1, wherein the circulating system is a closed loop system. 19