# US 9,752,479 B2 · Engine apparatus

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- Number: US 9,752,479 B2
- Document ID: US9752479B2
- Status: Granted
- Kind: B2
- Application number: 14/412,012
- Filed: 2013-07-05
- Published: 2015-06-04
- Granted: 2017-09-05
- Earliest claimed: 2012-07-05
- Assignees: Yanmar Co., Ltd.
- Applicants: Yanmar Co., Ltd.
- Inventors: Shinya Fukuyoshi; Kazuyuki Miyazaki
- Web page: https://patentgrep.com/patent/US9752479B2

## CPC

- F01N 3/055: {without contact between air and exhaust gases}
- F01N 3/021: by means of filters
- F01N 3/10: by thermal or catalytic conversion of noxious components of exhaust
- F01N 3/103: {Oxidation catalysts for HC and CO only}
- F01N 13/0097: {the purifying devices are arranged in a single housing}
- F01N 13/1805: {Fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine or to vehicle body (pipe joints in general F16L; fixing auxiliaries in motor vehicles in general B60K)}
- F01N 13/1844: {Mechanical joints}
- F01N 13/1855: {the connection being realised by using bolts, screws, rivets or the like}
- F01P 1/02: Arrangements for cooling cylinders or cylinder heads, e.g. ducting cooling-air from its pressure source to cylinders or along cylinders
- F02M 51/005: {Arrangement of electrical wires and connections, e.g. wire harness, sockets, plugs; Arrangement of electronic control circuits in or on fuel injection apparatus}
- F01N 2340/04: Arrangement of the exhaust system relative to a vehicle or parts thereof
- F01N 2560/08: the means being a pressure sensor
- F01N 2590/08: for heavy duty applications, e.g. trucks, buses, tractors, locomotives
- F01P 2001/026: {Cooling cylinder heads (F01P2003/025 takes precedence)}
- F02M 2200/85: Mounting of fuel injection apparatus
- Y02T 10/12: Improving ICE efficiencies
- 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)
- F01P: COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES (arrangements in connection with cooling of propulsion units in vehicles B60K11/00; heat-transfer, heat-exchange or heat-storage materials C09K5/00; {cooling of gas-turbine engines F02C7/12}; heat exchange in general, radiators F28)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An engine apparatus includes an exhaust gas purifier configured to purify exhaust gas from an engine. The exhaust gas purifier is mounted on the engine with a longitudinal direction of the exhaust gas purifier being orthogonal to an output shaft of the engine. A cooling fan is disposed on one side surface of the engine that intersects the output shaft. The exhaust gas purifier is supported by a cylinder head at a portion on an upper surface of the engine that is closer to the cooling fan.

## Claims

### Claim 1

An engine apparatus comprising:
an engine having an intake manifold, an exhaust manifold, a cylinder head having a head cover, and an output shaft;
a cooling fan disposed on a front surface of the engine that intersects the output shaft;
a power generator;
an EGR device;
a coolant pump;
an inlet-side bracket body and an outlet-side bracket body;
an exhaust gas purifier configured to purify exhaust gas from the engine,
the exhaust gas purifier being mounted on the engine with a longitudinal direction of the exhaust gas purifier being orthogonal to the output shaft,
the exhaust gas purifier being supported by the cylinder head through the inlet-side bracket body and the outlet-side bracket body at a portion on an upper surface of the engine located between the head cover and the cooling fan;
a lower end of the outlet-side bracket body being connected to a front surface of the cylinder head, and a lower end of the inlet-side bracket being connected to a front portion of a side surface of the cylinder head, an upper edge of each of the outlet-side bracket body and the inlet-side bracket body being connected by a reinforcement plate;
a receiving bracket affixed by welding to the exhaust downstream side of the exhaust gas purifier and being affixed to the reinforcement plate;
a flange of the exhaust gas purifier being affixed to an upper edge of the outlet-side bracket body;
the intake manifold and the exhaust manifold being separately disposed on respective side surfaces of the engine along the output shaft,
the power generator being disposed on a side of the exhaust manifold,
the EGR device being disposed on a side of the intake manifold,
the coolant pump being disposed on a side of the cooling fan, and
each one of the inlet-side bracket body and the outlet-side bracket body being set up above a cooling fan side of the cylinder head, and
the exhaust gas purifier being located in a range of an installation width of the power generator and the EGR device and above the coolant pump.

### Claim 2 (depends on 1)

The engine apparatus according to claim 1, further comprising:
a detection member that operates to detect with respect to the exhaust gas purifier and that has an electric wiring connector disposed on an outer peripheral portion of the exhaust gas purifier at a side opposite a side of the cooling fan.

### Claim 3 (depends on 1)

The engine apparatus according to claim 1, wherein the outlet-side bracket body is cast-iron and the inlet-side bracket body is sheet-metal.

### Claim 4 (depends on 1)

The engine apparatus according to claim 1, wherein the outlet-side bracket body is cast-iron and the inlet-side bracket is sheet-metal, an upper end of the outlet-side bracket body being fastened to the exhaust gas purifier, a vertically middle portion of the cast-iron bracket body being coupled to an intake manifold of the engine through an auxiliary sheet-metal bracket.

### Claim 5 (depends on 1)

The engine apparatus according to claim 1, further comprising:
injectors on the cylinder head;
fuel piping configured to supply fuel to the injectors;
control harnesses located adjacent to each other and disposed outside of the engine; and
a harness support to which the control harnesses are attached, the harness support being disposed on the cylinder head and crossing over the fuel piping.

### Claim 6 (depends on 5)

The engine apparatus according to claim 5, further comprising a head cover disposed on the cylinder head, and in which said intake manifold and an exhaust manifold are separately disposed on respective side surfaces of the cylinder head, the injectors are located on the cylinder head outside of the head cover,
one end of the harness support is fastened to the head cover, and another end of the harness support is fastened to one manifold of the intake manifold and the exhaust manifold, said one manifold being located on a side of the injectors that is opposite a side of the head cover.

### Claim 7 (depends on 5)

The engine apparatus according to claim 5, wherein the harness support is integral with a connector attachment portion supporting a relay connector of a branch harness that diverges from the control harnesses.