Auxiliary carburetion device in direct fuel injection engines
AssigneePiaggio Veicoli Europei S.p.A.
InventorMarco Nuti
Life of this patent
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Abstract
An auxiliary carburetion device in direct fuel injection engines, to be positioned in correspondence with a main duct (12) feeding air to the engine crankcase (10), a throttling member (38) being located in the main duct (12). The device includes a block (13) containing at least one selective regulating element (15, 25) positioned in a connection duct (19, 20; 30) which is connected at one end to a vessel (14; 45, 51) containing a constant predeterminable amount of fuel and to a mixing air duct (23, 32), and at the other end to the main duct (12) feeding the crankcase (10).
Claims16
An auxiliary carburetion device for utilization with direct fuel injection engines which include a main duct (12) for feeding air to an engine crankcase (10) under the control of a throttling member (38) in the main duct (12) comprising first (15, 42, 50) and second (25) regulating valve means associate with respective first (19, 20, 21;
- 20, 21, 40, 44;
- 19, 20, 21, 49, 54) and second (29, 30) duct means for controlling the flow of fluid therethrough, a vessel (14;
- 45, 51) containing a constant predeterminable amount of fuel, said first duct means being disposed in fluid communication between said vessel and said main duct, said second duct means being disposed in fluid communication between said vessel and said main duct, said first and second regulating valve means includes respective first (16) and second (26) piston means for imparting exterior control to said respective first and second regulating valve means, air duct means (32) in fluid communication with said second duct means, and fluid flow through said air duct means being controlled by said second regulating valve means.
An auxiliary carburetion device for utilization with direct fuel injection engines which include a main duct (12) for feeding air to an engine crankcase (10) under the control of a throttling member (38) in the main duct (12) comprising first (15, 42, 50) and second (25) regulating valve means associated with respective first (19, 20, 21;
- 20, 21, 40, 44;
- 19, 20, 21, 49, 54) and second (29, 30) duct means for controlling the flow of fluid therethrough, a vessel (14;
- 45, 51) containing a constant predeterminable amount of fuel, said first duct means being disposed in fluid communication between said vessel and said main duct, and said second duct means disposed in fluid communication between said vessel and said main duct, and said second duct means (19, 20, 21) is placed in fluid communication with said first regulating valve means (42) by a duct (40) between said second duct means and said first regulating valve means.
Dependencies are inferred from the claim text.