CONTROL METHOD FOR AUTOMATIC TRAVELLING OF ROTARY MOTOR SNOW-PLOUGH

PURPOSE:To avoid the overload of an engine, and to improve utilization efficiency by a method wherein the quantity of fuel injected is made constant when snow removing work, the load of snow removing is detected by the number of revolution of the engine and travelling speed is controlled automatical...

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Bibliographische Detailangaben
Hauptverfasser: NABESAWA JIYUNICHI, ISHIGURO KAZUAKI
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:PURPOSE:To avoid the overload of an engine, and to improve utilization efficiency by a method wherein the quantity of fuel injected is made constant when snow removing work, the load of snow removing is detected by the number of revolution of the engine and travelling speed is controlled automatically in the one engine system rotary motor snow-plough. CONSTITUTION:When engine regulating knotch in case of snow removing is made constant, frequency is changed into voltage by the first F/V conversion 16 of a controller 12 and the number of revolution 10 in case of maximum load and the number of revolution 11 where snow removing is unsuitable are compared by a first comparator 17 in the number of revolution 13 of the engine. When the number of revolution 13 of the engine is less than the number of revolution 10 in case of maximum load, command speed 9 is corrected by a second comparator 18 in response to the output. The command speed 9 is compared with car speed 14 converted into voltage by second F/V conversion 20 by a third comparator 19, and a slip clutch 5 is controlled lest difference should be formed. When the number of revolution 13 of the engine drops up to the number of revolution 11 or less where snow removing is unsuitable, the command speed 9 gives a command bringing equivalently zero to the third comparator 19, and load is reduced automatically.