Fuel metering arrangement in pneumatically assisted direct fuel

Details Fuel metering arrangement in pneumatically assisted direct fuel Fuel metering arrangement in pneumatically assisted direct fuel

1996-11-12

1997-12-09

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Auxiliary air or gas used to inject fuel

F02M 6702

Patent

active

056949057

ABSTRACT:
A fuel metering arrangement in devices for pneumatically assisted direct fuel injection into an internal combustion engine cylinder head (12) provided with a chamber (19) housing a connecting rod (23) for operating a compression piston (24) slidingly guided within a jacket (25) provided with one or more transfer conduits (26) connecting said internal chamber (19) to a variable-dimension space (27) positioned downstream of the piston (24) and upstream of a valve (28) providing access to a combustion chamber (29), fuel feed means (31, 33, 35) being connected to said variable-dimension space (27). In this manner a very rapid transient is achieved during acceleration.

REFERENCES:
patent: 2710600 (1955-06-01), Nallinger
patent: 5009212 (1991-04-01), Bishai
patent: 5048497 (1991-09-01), Kishida et al.
patent: 5069189 (1991-12-01), Saito
patent: 5226399 (1993-07-01), Ozawa
patent: 5271372 (1993-12-01), Nuti

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