Flow divider device for air manifolds adapted to generate turbulent flows in combustion chambers

• US 6,782,872 B2
• Filed: 05/29/2003
• Issued: 08/31/2004
• Est. Priority Date: 05/31/2002
• Status: Expired due to Fees

• Current Assignee: Magneti Marelli Powertrain S.p.A. (Magneti Marelli S.p.A.)
• Original Assignee: Magneti Marelli Powertrain S.p.A. (Magneti Marelli S.p.A.)
• Inventors: Tartari, Stefano, Bortolotti, Paolo, Bellato, Nazario, Xella, Maurizio, Monteverde, Bruno, Mattogno, Gianluca, Moschini, Renzo
• Primary Examiner(s): Huynh, Hai
• Application Number:
  US10/447,264
• Publication Number:
  US 20040053178A1
• Time in Patent Office: 460 Days
• Field of Search: 123/470, 123/472, 123/306, 123/195.A, 123/337, 123/184.38, 123/184.44, 123/184.45, 123/184.49, 123/184.52, 123/184.53, 123/184.55, 123/184.59
• US Class Current: 123/470
• CPC Class Codes: F02B 31/085 having two inlet valves
• CPC Class Codes: F02D 9/10 having pivotally-mounted flaps
• CPC Class Codes: F02M 35/10032 specially shaped or arranged connecting duct between carburettor or air inlet duct and the plenum chamber; specially positioned carburettors or throttle bodies with respect to the plenum chamber
• CPC Class Codes: F02M 35/10085 having a connecting piece, e.g. a flange, between the engine and the air intake being foreseen with a throttle valve, fuel injector, mixture ducts or the like
• CPC Class Codes: F02M 35/10216 Fuel injectors; Fuel pipes or rails; Fuel pumps or pressure regulators
• CPC Class Codes: F02M 35/10255 Arrangements of valves; Multi-way valves F02M35/10032 takes precedence; valves in the plenum chamber F02M35/10065; check valves F02M35/10275
• CPC Class Codes: F02M 35/10288 Air intakes combined with another engine part, e.g. cylinder head cover or being cast in one piece with the exhaust manifold, cylinder head or engine block
• CPC Class Codes: F02M 35/108 with primary and secondary intake passages
• CPC Class Codes: F02M 35/112 for engines with cylinders all in one line
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A device for air/fuel manifolds adapted to generate turbulent flows in combustion chambers. The device comprises a plurality of runners each of which internally comprises a longitudinal baffle adapted to form two channels each having a respective flow of air/fuel mixture to the combustion chamber. Moreover, in one channel is housed a throttle having, in its fully closed position, an aureole which extends along the whole perimeter of the throttle. The longitudinal baffle has a port for communication between the two channels, whereas a jet of fuel generated by an injector is targeted on the port for communication between the two channels.

Claims

1. A device (12) for air/fuel manifolds (11) adapted to generate turbulent flows in combustion chambers, which device (12) comprises a flanged main body (15) and at least one injector (22), said flanged main body (15) comprising, in its turn, a plurality of runners (16) each of which is in fluid-dynamic communication, at one end, with a corresponding upstream runner (14) belonging to the air/fuel manifold (11) and, at another end, with a corresponding combustion chamber to which an air/fuel mixture is supplied;

a device (12) wherein each runner (16) internally comprises a longitudinal baffle (17) adapted to form two channels (18, 19) each having a respective flow of air/fuel mixture to the combustion chamber, in one channel (18) being housed a throttle (20) having, in its fully closed position, an aureole (24) which extends along the whole perimeter of the throttle (20);

the device (12) being characterised in that the longitudinal baffle (17) has a port (23) for communication between the two channels (18, 19), and in that a jet (GET) of fuel generated by said at least one injector (22) is targeted on the port (23) for communication between the two channels (18, 19).

2. A device (12) as claimed in claim 1, wherein the “

coverage factor”

(k) of the throttle (20) with respect to the transverse section of the channel (18) varies between 0.83 and 0.9.

3. A device (12) as claimed in claim 1, wherein the throttle (20) is disposed upstream of the port (23), the surface of this throttle (20) facing the head having a distance (D) of between 2 and 5 mm from the closest edge of this port (23).

4. A device (12) as claimed in claim 3, wherein this distance (D) is 3 mm.

5. A device (12) as claimed in claim 1, wherein the surface area of the port (23) is between 230 and 270 mm².

6. A device (12) as claimed in claim 5, wherein the surface area of this port (23) does not exceed 250 mm².