US 2013/0199179 A1 · TURBOCHARGER SYSTEM

Abstract

A turbocharger system for ensuring a sufficient exhaust gas recirculation (“EGR”) amount in all operating conditions, and reducing NOx emission from an engine. The system includes an EGR controller that re-circulates a part of exhaust gas discharged from the engine to an intake side. The turbocharger is a power-assisted turbocharger including an electric motor that assists a drive force of a compressor. The EGR controller controls an amount of exhaust gas recirculated to the intake side so as to inhibit the generation of NOx regardless of an amount of oxygen necessary for combustion of the engine. An electric motor control unit drives the electric motor, by the control of the EGR controller, when the amount of oxygen necessary for the combustion of the engine is deficient.

Claims6

Dependent claims

1-4. (canceled)

A turbocharger system for an engine comprising:

an EGR controller that recirculates a part of exhaust gas discharged from the engine to an intake side;
and
a turbocharger including a turbine disposed on an exhaust passage and driven by exhaust, and a compressor disposed on an intake passage and driven by a rotational torque of the turbine,
wherein the turbocharger includes a power-assisted turbocharger provided with an electric motor that assists a drive force of the compressor,
the EGR controller controls an amount of exhaust gas recirculated to the intake side so as to inhibit the generation of NOx regardless of an amount of oxygen necessary for combustion of the engine, and
an electric motor control unit is provided to drive the electric motor, by control of the EGR controller, when the amount of the oxygen necessary for the combustion of the engine is deficient.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application

13/881,103Filed 24 Oct 2011

Priority

JP 2010-24253028 Oct 2010

Published

8 Aug 2013

Term ends

Not estimatedThe source records don’t support an estimate.

Classification12 codes

F02M 26/03
EGR systems specially adapted for supercharged engines: with a single mechanically or electrically driven intake charge compressor
F02B 37/004
Engines characterised by provision of pumps driven at least for part of the time by exhaust: with exhaust drives arranged in series
F02B 37/013
Engines characterised by provision of pumps driven at least for part of the time by exhaust: with exhaust-driven pumps arranged in series
F02B 37/10
Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump: at least one pump being…

Turbocharger system

Life of this patent

Turbocharger system

Life of this patent

Abstract

Claims6