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EP0732490A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

A turbocharged diesel engine assembly

Assignee: Cummins Inc
•
Filing: 1996-02-28
•
Granted: —
•
Expires: 2016-02-28
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Abstract

Abstract A gas flow network (10) in combination with a highly turbocharged diesel engine (11) for the blending of EGR gas with fresh charge air. In the diesel engine assembly which incorporates the flow network (18a) for EGR gas, a venturi conduit (19) and control valve (19a) combination is positioned between the intake manifold (17) and aftercooler (14) and is connected to a flow line (18a) carrying the EGR gas. This system utilises a low static pressure at the narrow throat of the venturi (19) so as to induce the flow of EGR gas into the fresh charge air, the flow being controlled by the state of the control valve (19a).

Inventors

  • 👤 Rod Radovanovic
  • 👤 A.S. Ghuman
  • 👤 Gregory H. Henderson
  • 👤 Angela R. May

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-10-28 15:30
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/13; F02M26/22; F02M26/23; F02M26/17; F02M26/19; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B3/00; F02B3/06; F02D; F02D9/00; F02D9/08; F02D9/12; F02M26/02; F02M26/04; F02M26/05; F02M26/09; F02M26/10; F02M26/21

Claims Analysis

Total Claims: 6
Claim 1
Independent Claim 185 words
In combination: a turbocharged diesel engine assembly including a diesel engine, a turbocharger, an engine gas flow line from said diesel engine for routing engine gas out of said diesel engine, and a fresh charge air flow line from said turbocharger to said diesel engine so as to deliver fresh charge air from said turbocharger to said diesel engine; a venturi conduit placed in said fresh charge air flow line between said turbocharger and said engine, said venturi conduit having a throat area and defining a flow path therethrough for said fresh charge air; and a control valve having a passageway therethrough and being attached to said throat area and disposed in flow communication with the flow path through said venturi conduit, said passageway being connected in flow communication with said engine gas flow line whereby engine gas exiting from said diesel engine and flowing through said engine gas flow line is able to be blended with fresh charge air due to a low static pressure created by said venturi, the introduction of engine gas into said venturi conduit being controlled by said control valve.
Claim 2
Dependent Claim 22 words
A combination according to claim 1 wherein said turbocharged diesel engine assembly includes an aftercooler in said fresh charge air flow line.
Claim 3
Dependent Claim 21 words
A combination according to claim 2 wherein said venturi is placed downstream of said aftercooler between said aftercooler and said engine.
Claim 4
Dependent Claim 21 words
A combination according to claim 2 wherein said venturi is placed upstream of said aftercooler between said aftercooler and said turbocharger.
Claim 5
Dependent Claim 24 words
The combination of claim 4 wherein said turbocharged diesel engine assembly includes a filter in said engine gas flow line upstream of said venturi.
Claim 6
Dependent Claim 58 words
The combination of claim 1 wherein said control valve is set at an acute angle relative to said venturi conduit such that in operation with a flow of engine gas through said passageway and a flow of fresh charge air through said venturi conduit, the engine gas enters the flow of fresh charge air at an acute angle.

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