Energy recovery apparatus for turbo compound engine

• US 4,756,377 A
• Filed: 10/23/1987
• Issued: 07/12/1988
• Est. Priority Date: 10/19/1985
• Status: Expired due to Term

• Current Assignee: Isuzu Motors Limited
• Original Assignee: Isuzu Motors Limited
• Inventors: Kawamura, Hideo, Tamai, Katsuyuki
• Primary Examiner(s): Love, John J.
• Assistant Examiner(s): CAMBY, RICHARD M
• Application Number:
  US07/111,680
• Time in Patent Office: 263 Days
• Field of Search: 180/65.2, 180/65.6, 180/65.3, 180/65.4, 180/165, 180/65.5, 60/597, 60/598, 60/608, 290/52
• US Class Current: 180/165
• CPC Class Codes: B60K 6/22 characterised by apparatus, components or means specially adapted for HEVs
• CPC Class Codes: B60K 6/46 Series type
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/26 for electrical energy, e.g. batteries or capacitors
• CPC Class Codes: F01N 5/04 the devices using kinetic energy
• CPC Class Codes: F02B 37/005 Exhaust driven pumps being combined with an exhaust driven auxiliary apparatus, e.g. a ventilator
• CPC Class Codes: F02B 37/04 Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
• CPC Class Codes: F02B 37/10 at least one pump being alternatively or simultaneously driven by exhaust and other drive, e.g. by pressurised fluid from a reservoir or an engine-driven pump
• CPC Class Codes: F02B 37/14 Control of the alternation between or the operation of exhaust drive and other drive of a pump, e.g. dependent on speed
• CPC Class Codes: F02B 39/10 electric
• CPC Class Codes: F02B 41/10 in exhaust turbines use of exhaust turbines for charging F02B37/00
• CPC Class Codes: F02D 41/0007 for control of turbo-charged or super-charged engines control of the pumps per se F02B37/12
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/62 Hybrid vehicles
• CPC Class Codes: Y10S 903/904 Component specially adapted for hev

Abstract

An energy recovery apparatus for a turbo compound engine is provided having: an exhaust turbine with a first rotary machine in an exhaust pipe of an internal combustion engine; a second rotary machine mounted on a wheel axle of a motor vehicle, which is driven by the internal combustion engine, and an exhaust turbine coupled to the exhaust port of the first-mentioned exhaust turbine; and a third rotary machine operable as a generator. The energy recovery apparatus also includes a first sensor for detecting the speed of rotation of the internal combustion engine and a second sensor for detecting the load on the engine. The first through third rotary machines are controlled by signals from the sensors and efficiently utilize the exhaust energy carried by the exhaust gas discharged from the internal combustion engine.

Claims

1. An energy recovery apparatus in a turbo compound engine, comprising:

(a) an exhaust turbine having an AC generator disposed in an exhaust pipe of an internal combustion engine;

(b) first means for detecting the speed of rotation of a wheel axle drivable by said internal combustion engine;

(c) an AC motor mounted on said wheel axle; and

(d) second means for supplying electric power to said AC motor from said AC generator according to the speed of rotation of said wheel axle.

3. An energy recovery apparatus according to claim 1, further comprising:

(e) third means including a rectifier and an inverter for converting electric power generated at a higher frequency by said AC generator to electric power of a lower frequency.

2. An energy recovery apparatus according to claim 7, further comprising:

(e) third means including a converter for converting electric power generated at a high frequency by said AC generator to electric power of a lower frequency.