# US 2016/0252008 A1 · Engine device

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- Number: US 2016/0252008 A1
- Document ID: US20160252008A1
- Status: Published application
- Kind: A1
- Application number: 15/031,035
- Filed: 2014-10-22
- Published: 2016-09-01
- Earliest claimed: 2013-10-28
- Assignees: Yanmar Co., Ltd.
- Applicants: Yanmar Co., Ltd.
- Inventors: Shunji HAMAOKA; Fumihiro NISHIMURA; Tetsuya YOKOYAMA
- Web page: https://patentgrep.com/patent/US20160252008A1

## CPC

- F02B 37/004: {with exhaust drives arranged in series}
- F02B 37/013: with exhaust-driven pumps arranged in series
- F02B 67/10: of charging or scavenging apparatus
- F02M 26/08: for engines having two or more intake charge compressors or exhaust gas turbines, e.g. a turbocharger combined with an additional compressor
- F02M 26/09: Constructional details, e.g. structural combinations of EGR systems and supercharger systems; Arrangement of the EGR and supercharger systems with respect to the engine
- F02M 26/32: Liquid-cooled heat exchangers
- F02M 35/10157: {Supercharged engines}
- F02M 35/10268: {Heating, cooling or thermal insulating means (air coolers F02B29/04; thermal treatment of combustion-air, fuel or fuel-air mixture F02M31/00; details of the throttle valve housing F02D9/1035)}
- F02M 35/165: {Marine vessels; Ships; Boats}
- F01N 2590/02: for marine vessels or naval applications
- Y02T 10/12: Improving ICE efficiencies
- 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
- F01N: GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL-COMBUSTION ENGINES (arrangements in connection with gas exhaust of propulsion units in vehicles B60K13/00; combustion-air intake silencers specially adapted for, or arranged on, internal-combustion engines F02M35/00; protecting against, or damping, noise in general G10K11/16)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An engine device which can simplify a supply air cooling structure of an engine as well as simplifying a support structure of a first supercharger and a second supercharger. In an engine device in which the first supercharger and the second supercharger are arranged in series in an exhaust gas discharge channel of the engine, the first supercharger and the second supercharger are arranged in one side surface of the engine, the second supercharger is arranged so as to be close to the one side surface of the engine, and the first supercharger is arranged so as to be away from the one side surface of the engine.

## Claims

### Claim 1

An engine device comprising:
a first supercharger
a second supercharger; and
the first supercharger and the second supercharger being arranged in series in an exhaust gas discharge channel of an engine,
wherein the first supercharger and the second supercharger are arranged in one side surface of the engine, the second supercharger is arranged so as to be close to the one side surface of the engine, and the first supercharger is arranged so as to be away from the one side surface of the engine.

### Claim 2 (depends on 1)

The engine device according to claim 1, wherein a vertical portion of a supercharger unit frame is bonded and fixed to the one side surface of the engine, and the first supercharger and the second supercharger are attached to a top surface side of a horizontal portion of the supercharger unit frame.

### Claim 3 (depends on 1)

The engine device according to claim 1, further comprising an intercooler which lowers a supply air temperature of the first supercharger and the second supercharger, wherein a vertical portion of a supercharger unit frame is bonded and fixed to the one side surface of the engine, and the intercooler is attached to a lower surface side of a horizontal portion of the supercharger unit frame.

### Claim 4 (depends on 2)

The engine device according to claim 2, further comprising an exhaust pipe which derives exhaust gas of the engine to the first supercharger, wherein one end portion of the horizontal portion of the supercharger unit frame is connected in an L-shaped manner to an upper end side of the vertical portion of the supercharger unit frame, a cradle frame is firmly fixed to a top surface side of the horizontal portion of the supercharger unit frame to which the vertical portion of the supercharger unit frame is connected, the second supercharger is mounted on the cradle frame, and the exhaust pipe is extended between the horizontal portion of the supercharger unit frame and the cradle frame.

### Claim 5 (depends on 1)

The engine device according to claim 1, wherein an exhaust pipe between the engine and the first supercharger, and a cooling water piping are extended in parallel to one side of head covers.