# US 8,739,528 B2 · Hybrid exhaust turbine turbocharger

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- Number: US 8,739,528 B2
- Document ID: US8739528B2
- Status: Granted
- Kind: B2
- Application number: 13/133,211
- Filed: 2009-04-24
- Published: 2011-10-06
- Granted: 2014-06-03
- Earliest claimed: 2009-04-24
- Assignees: Mitsubishi Heavy Industries, Ltd.
- Applicants: Keiichi Shiraishi
- Inventors: Keiichi Shiraishi
- Web page: https://patentgrep.com/patent/US8739528B2

## CPC

- F02C 6/12: Turbochargers, i.e. plants for augmenting mechanical power output of internal-combustion piston engines by increase of charge pressure
- F01D 25/18: Lubricating arrangements (of machines or engines in general F01M)
- F01D 25/186: {for sliding contact bearing}
- F02B 41/10: in exhaust turbines (use of exhaust turbines for charging F02B37/00)
- F02C 7/045: having provisions for noise suppression
- F02M 35/1272: {using absorbing, damping, insulating or reflecting materials, e.g. porous foams, fibres, rubbers, fabrics, coatings or membranes}
- F02M 35/1277: {Reinforcement of walls, e.g. with ribs or laminates; Walls having air gaps or additional sound damping layers}
- F02M 35/1288: {combined with or integrated into other devices (F02M35/14 takes precedence); Plurality of air intake silencers (F02M35/1266 takes precedence)}
- Y02T 10/12: Improving ICE efficiencies
- F02C: GAS-TURBINE PLANTS; AIR INTAKES FOR JET-PROPULSION PLANTS; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS (construction of turbines F01D; jet-propulsion plants F02K; construction of compressors or fans F04; generating combustion products of high pressure or high velocity F23R; using gas turbines in compression refrigeration plants F25B11/00)
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A hybrid exhaust turbine turbocharger includes which a silencer-connected to an intake system of an internal combustion engine and supported by a casing via a compressor unit is provided upstream of the compressor unit, and in which a shell housing having a recess, accommodating a generator, therein is provided in a midsection of the silencer, an oil reservoir that holds a lubricant having lubricated a bearing disposed within the generator and dripped from the generator is formed at a bottom section of the shell housing, and the lubricant accumulated in the oil reservoir is returned by gravity to an oil tank disposed downstream via a lubricant discharge tube that communicates with the oil reservoir.

## Claims

### Claim 1

A hybrid exhaust turbine turbocharger comprising:
a turbine unit configured to be driven by exhaust gas guided from an internal combustion engine;
a compressor unit configured to be driven by the turbine unit so as to pump outside air to the internal combustion engine;
a casing configured to support the turbine unit and the compressor unit;
a silencer connected to an intake system of the internal combustion engine and supported by the casing via the compressor unit and being disposed upstream of the compressor unit;
a shell housing having a bottom section and a recess therein, the shell housing being disposed in a midsection of the silencer, and the recess accommodating a generator;
an oil reservoir configured to hold a lubricant after the lubricant has lubricated a bearing disposed within the generator and dripped from the generator, the oil reservoir being disposed at a bottom section of the shell housing; and
a lubricant discharge tube communicating with the oil reservoir, and being configured to return the lubricant accumulated in the oil reservoir by gravity to an oil tank disposed downstream,
wherein one end of the lubricant discharge tube is connected to lubricant outlet that is provided at a bottom section of a front surface of the oil reservoir.

### Claim 2 (depends on 1)

An internal combustion engine comprising a hybrid exhaust turbine turbocharger according to claim 1.

### Claim 3 (depends on 1)

The hybrid exhaust turbine turbocharger according to claim 1, wherein the oil reservoir extends in a longitudinal direction of the shell housing and is a space substantially having a shape of an isosceles trapezoid in cross section.