Turbocharger system

Patent metadata

Field	Value
Publication number	US-9512843-B2
Application number	US-201113882065-A
Country	US
Kind code	B2
Filing date	Oct 26, 2011
Priority date	Oct 29, 2010
Publication date	Dec 6, 2016
Grant date	Dec 6, 2016

Abstract

A turbocharger system for achieving both improvement of fuel efficiency by engine downsizing and excellent shock loading resistance. The system includes: a power-assisted turbocharger mounted on a vehicle having an accessory and including a turbine disposed on an exhaust passage of an engine and driven by exhaust, a compressor disposed on an intake passage and driven by a rotational torque of the turbine, and an electric motor that assists a drive force of the compressor; and an electric motor control unit that drives the electric motor when the accessory is being driven.

First claim

The invention claimed is:

1. A turbocharger system for a vehicle having an engine, comprising:
an accessory mechanically connected to and driven to move by the engine to perform work;
a power-assisted turbocharger including a turbine disposed on an exhaust passage of the engine and driven by exhaust, a compressor disposed on an intake passage of the engine and driven by a rotational torque of the turbine, and an electric motor that assists a drive force of the compressor,
wherein the turbocharger assists in powering the engine; and
an electric motor control unit that continuously drives the electric motor in a running mode, where the electric motor is driven but the accessory is not driven, and in a driving mode, where the electric motor and the accessory are both driven.

2. The turbocharger system according to claim 1 , further comprising a manual switch to change from the running mode to the driving mode so that the accessory is driven.

3. The turbocharger system according to claim 1 , wherein the electric motor control unit drives the electric motor at a rotational speed corresponding to a speed of the engine.

4. The turbocharger system according to claim 2 , wherein the electric motor control unit drives the electric motor at a rotational speed corresponding to a speed of the engine.

Assignees

• Kitsukawa Isao
• Sugano Tomohiro
• Abe Yoshiyuki
• Kimura Haruyo
• Iijima Akira
• Ishibashi Naoki
• Sakashita Syougo
• Isuzu Motors Ltd

Inventors

• Kitsukawa Isao
• Sugano Tomohiro
• Abe Yoshiyuki
• Kimura Haruyo
• Iijima Akira
• Ishibashi Naoki
• Sakashita Syougo

Classifications

• F02B39/10

  electric · CPC title

• F02M26/23

  Layout, e.g. schematics · CPC title

• F02D2200/50

  said parameters being related to the vehicle or its components · CPC title

• F02M26/05

  High pressure loops, i.e. wherein recirculated exhaust gas is taken out from the exhaust system upstream of the turbine and reintroduced into the intake system downstream of the compressor · CPC title

• F02B37/14

  {Control} of the alternation between {or the operation of} exhaust drive and other drive of a pump, e.g. dependent on speed · CPC title