Exhaust porting apparatus
First Claim
1. An exhaust porting apparatus for a turbocharged internal combustion engine, said apparatus comprising:
- a housing comprising a tube defining an inlet port and an outlet port at opposite ends thereof;
a valve member arranged within the tube between said ports, said valve member displaceable between a high-velocity gas inlet position (wherein the valve member allows unobstructed fluid flow between the inlet and outlet ports) and a low-velocity gas inlet position (wherein the valve member obstructs fluid flow through the outlet port whilst allowing unobstructed fluid flow into the inlet port), the valve member comprising a solid tubular member defining a transverse conduit therethrough, the tubular member, in turn, arranged transversely to the tubular housing, so that operative rotation of the tubular valve member within the housing angles the transverse conduit between the inlet and outlet ports, wherein an inlet port side of the valve member'"'"'s transverse conduit is larger than an outlet port side thereof to allow obstruction of fluid flow through the outlet port whilst allowing unobstructed fluid flow into the inlet port when operatively rotated; and
an actuator configured for dynamically actuating the valve member between the low- and high-velocity gas inlet positions by rotating the tubular member through a range of 0°
to 55°
;
wherein, when the inlet and outlet ports operatively arrange the housing in fluid communication with the engine'"'"'s exhaust, dynamic actuation of the valve member enables an increase in exhaust gas velocity via the outlet port into the turbocharger by means of the Venturi effect in order to minimise turbocharger lag at low engine revolutions.
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Accused Products
Abstract
Provided is an exhaust porting apparatus (10) for a turbocharged internal combustion engine (4) which includes a turbocharger (6) that is conventionally arranged in fluid communication with the exhaust (8), the turbo in turn facilitating forced air induction back into the engine via air intake (5). The apparatus (10) comprises a housing (12) that defines an inlet port (14) and an outlet port (16). The apparatus (10) also includes a valve member 18 which is arranged within the housing (12). The valve member (18) is generally displaceable between a high-velocity gas inlet position, wherein the valve member (18) allows unobstructed fluid flow between the inlet and outlet ports (14) and (16), and a low-velocity gas inlet position, wherein the valve member (18) obstructs fluid flow through the outlet port 16 whilst allowing unobstructed fluid flow into the inlet port (14). The apparatus (10) further includes an actuator (20) which is generally configured for dynamically actuating the valve member (18) between the low- and high-velocity gas inlet positions. In this manner, when the inlet and outlet ports (14) and (16) operatively arranges the housing (12) in fluid communication with the engine'"'"'s exhaust (8), dynamic actuation of the valve member (18) enables an increase in exhaust gas velocity via the outlet port 16 into the turbocharger (6) by means of the Venturi effect.
8 Citations
9 Claims
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1. An exhaust porting apparatus for a turbocharged internal combustion engine, said apparatus comprising:
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a housing comprising a tube defining an inlet port and an outlet port at opposite ends thereof; a valve member arranged within the tube between said ports, said valve member displaceable between a high-velocity gas inlet position (wherein the valve member allows unobstructed fluid flow between the inlet and outlet ports) and a low-velocity gas inlet position (wherein the valve member obstructs fluid flow through the outlet port whilst allowing unobstructed fluid flow into the inlet port), the valve member comprising a solid tubular member defining a transverse conduit therethrough, the tubular member, in turn, arranged transversely to the tubular housing, so that operative rotation of the tubular valve member within the housing angles the transverse conduit between the inlet and outlet ports, wherein an inlet port side of the valve member'"'"'s transverse conduit is larger than an outlet port side thereof to allow obstruction of fluid flow through the outlet port whilst allowing unobstructed fluid flow into the inlet port when operatively rotated; and an actuator configured for dynamically actuating the valve member between the low- and high-velocity gas inlet positions by rotating the tubular member through a range of 0°
to 55°
;wherein, when the inlet and outlet ports operatively arrange the housing in fluid communication with the engine'"'"'s exhaust, dynamic actuation of the valve member enables an increase in exhaust gas velocity via the outlet port into the turbocharger by means of the Venturi effect in order to minimise turbocharger lag at low engine revolutions. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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Specification