# US 10,371,040 B2 · Engine device and stationary work machine having same mounted thereon

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- Number: US 10,371,040 B2
- Document ID: US10371040B2
- Status: Granted
- Kind: B2
- Application number: 15/270,736
- Filed: 2016-09-20
- Published: 2017-01-12
- Granted: 2019-08-06
- Earliest claimed: 2014-03-20
- Assignees: Yanmar Co., Ltd.
- Applicants: Yanmar Co., Ltd.
- Inventors: Masataka Mitsuda; Hokuto Kusaka; Masayuki Yamada; Isao Taguchi; Yoshiaki Shibata
- Web page: https://patentgrep.com/patent/US10371040B2

## CPC

- F01P 3/20: Cooling circuits not specific to a single part of engine or machine (F01P3/22 takes precedence)
- F01N 3/021: by means of filters
- F01N 3/023: using means for regenerating the filters, e.g. by burning trapped particles
- F01N 3/0231: {using special exhaust apparatus upstream of the filter for producing nitrogen dioxide, e.g. for continuous filter regeneration systems [CRT]}
- F01N 3/103: {Oxidation catalysts for HC and CO only}
- F01N 3/106: {Auxiliary oxidation catalysts}
- F01N 11/00: Monitoring or diagnostic devices for exhaust-gas treatment apparatus
- F01N 13/0097: {the purifying devices are arranged in a single housing}
- F01N 13/08: Other arrangements or adaptations of exhaust conduits {(pipes, joints or supports therefor in general F16L; collecting or removing exhaust gases of vehicle engines in workshops B08B15/00, on highways E01C1/005)}
- F01N 13/10: of exhaust manifolds {(with cooling jacket F01N3/046)}
- 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 13/1855: {the connection being realised by using bolts, screws, rivets or the like}
- F01P 5/02: Pumping cooling-air; Arrangements of cooling-air pumps, e.g. fans or blowers
- F01P 7/02: the coolant being cooling-air
- F02B 63/04: for electric generators
- F01N 3/2885: {with exhaust silencers in a single housing}
- F01N 2260/024: using a liquid
- F01N 2340/04: Arrangement of the exhaust system relative to a vehicle or parts thereof
- F01N 2560/06: the means being a temperature sensor
- F01N 2560/08: the means being a pressure sensor
- F01N 2590/08: for heavy duty applications, e.g. trucks, buses, tractors, locomotives
- F01N 2590/10: for stationary applications
- Y02T 10/40: Engine management systems
- 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)
- 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)
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

An engine includes an exhaust-gas purification device. The exhaust-gas purification device purifies exhaust gas. The exhaust-gas purification device includes electrical components. The electrical components detect the states of the exhaust-gas purification device. The engine includes a cooling-water circulation mechanism for circulating cooling water for the engine. Further, a portion of the cooling water circulated by the cooling-water circulation mechanism cools the electrical components.

## Claims

### Claim 1

An engine device comprising:
an engine;
an exhaust-gas purification device configured to purify exhaust gas from the engine;
at least one electrical component configured to detect a state of the exhaust-gas purification device; a support bracket secured to an exhaust-gas purification case of the exhaust-gas purification device, the support bracket configured to support the at least one electrical component at a position outside the exhaust-gas purification device;
a cooling-water circulation mechanism configured to circulate cooling water for cooling the engine, wherein a portion of the cooling water circulated by the cooling-water circulation mechanism cools the at least one electrical component; and
a cooling-water supply tube which extends from the engine to outside of the engine to a location proximate to the electrical component,
wherein the cooling-water supply tube is:
disposed on the support bracket at a position between the at least one electrical component and the exhaust-gas purification device; and
configured to enable the portion of the cooling water, circulated by the cooling-water circulation mechanism, to flow in the cooling-water supply tube.

### Claim 2 (depends on 1)

The engine device according to claim 1, further comprising:
the exhaust-gas purification case; and
wherein the at least one electrical component is disposed on the support bracket.

### Claim 3 (depends on 1)

The engine device according to claim 1, further comprising:
a flywheel housing disposed at one side of the engine; and
a crankshaft for the engine,
wherein the exhaust-gas purification device is disposed on the flywheel housing and is configured such that a longitudinal direction of the exhaust-gas purification device is perpendicular to a longitudinal direction of the crankshaft.

### Claim 4 (depends on 1)

The engine device according to claim 1, wherein the exhaust gas moves from an upstream side to a downstream side of the exhaust-gas purification device, and wherein the at least one electrical component is disposed outside of the exhaust-gas purification device and proximate to the upstream side of the exhaust-gas purification device.

### Claim 5 (depends on 1)

The engine device according to claim 1, further comprising a radiator.

### Claim 6 (depends on 1)

The engine device according to claim 1, wherein the engine is arranged in a position between the at least one electrical component and the exhaust-gas purification device.

### Claim 7 (depends on 1)

The engine device according to claim 1, wherein the at least one electrical component comprises a differential pressure sensor.

### Claim 8 (depends on 4)

The engine device according to claim 4, further comprising:
an exhaust manifold disposed at one side of the engine;
an exhaust-gas introduction unit coupling the exhaust-gas purification device to the exhaust manifold; and
the exhaust-gas purification case included in the exhaust-gas purification device; and
wherein the support bracket secured to an end face of the exhaust-gas purification case; and
wherein the at least one electrical component is disposed at a position outside the exhaust-gas introduction unit.

### Claim 9 (depends on 1)

The engine device according to claim 1, further comprising:
a cooling fan disposed at one side of the engine;
a flywheel housing disposed at another side of the engine; and
a flywheel disposed inside the flywheel housing,
wherein the flywheel is coupled to a work unit and is configured to transfer power of the engine to the work unit, and
wherein the exhaust-gas purification device is disposed at an upper-face side of the flywheel housing such that the exhaust-gas purification device is located above the work unit.

### Claim 10 (depends on 9)

A stationary work machine comprising:
the engine device according to claim 9;
the work unit, which comprises a compressor or a power generator;
a chassis containing the work unit and the engine device, and
a ventilation opening disposed at an upper face of the chassis and configured to connect an inside and an outside of the chassis, wherein the exhaust-gas purification device is arranged to face the ventilation opening from below.

### Claim 11 (depends on 10)

The stationary work machine according to claim 10, further comprising a shutter plate arranged inside the chassis and configured to open and shut the ventilation opening, wherein the shutter plate is configured to receive wind from the cooling fan and close the ventilation opening when the engine is in a driven state, and wherein the shutter plate is configured to open the ventilation opening with the weight of the shutter plate when the engine is in a stop state.

### Claim 12 (depends on 10)

The stationary work machine according to claim 10, further comprising:
a shutter plate configured to open and close the ventilation opening;
a key switch having a first position and an second position; and
an actuator configured to drive the shutter plate to close the ventilation opening when the key switch in in the first position and configured to drive the shutter plate to open the ventilation opening when the key switch is in the second position.

### Claim 13

A station work machine comprising:
a work unit comprising a compressor or a power generator;
an engine;
a chassis containing the work unit and the engine;
a cooling fan disposed at one side of the engine;
a flywheel housing disposed at another side of the engine; and
a flywheel disposed inside the flywheel housing, the flywheel coupled to the work unit and configured to transfer power of the engine to the work unit;
a ventilation opening disposed at an upper face of the chassis and configured to connect an inside and an outside of the chassis; and
an exhaust-gas purification device configured to purify exhaust gas from the engine,
wherein the exhaust-gas purification device is:
disposed at an upper-face side of the flywheel housing such that the exhaust-gas purification device is located above the work unit; and
arranged to face the ventilation opening from below;
at least one electrical component configured to detect a state of the exhaust-gas purification device;
a cooling-water circulation mechanism configured to circulate cooling water for cooling the engine, wherein a portion of the cooling water circulated by the cooling-water circulation mechanism cools the at least one electrical component; and
a shutter plate arranged inside the chassis and configured to:
open the ventilation opening with the weight of the shutter plate when the engine is in a stop state; or
receive wind from the cooling fan and close the ventilation opening when the engine is in a driven state.

### Claim 14 (depends on 13)

The stationary work machine according to claim 13, wherein the at least one electrical component comprises a differential pressure sensor.

### Claim 15 (depends on 13)

The stationary work machine according to claim 13, further comprising:
a cooling-water supply tube which extends from the engine to outside of the engine to a location proximate to the electrical component.

### Claim 16 (depends on 13)

The stationary work machine according to claim 13, further comprising:
a key switch; and
an actuator configured to drive the shutter plate based on a position of the key switch.

### Claim 17 (depends on 16)

The stationary work machine according to claim 16, wherein:
the actuator is configured to drive the shutter plate to close the ventilation opening when the key switch in in a first position.

### Claim 18 (depends on 17)

The stationary work machine according to claim 17, wherein:
the actuator is configured to drive the shutter plate to open the ventilation opening when the key switch is in a second position.