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US 12,134,979 B2Granted
V-type engine including catalyst extending in height direction of engine body and work machine including same
AssigneeHonda Motor Co., Ltd.
InventorAtsuki Sugihara
Life of this patent
Estimating the term…
Abstract
A V-type engine includes an engine body including a crankcase configured to rotatably support a crankshaft, and a first and second cylinder banks extending from the crankcase, an exhaust collecting pipe connected to the first and second cylinder banks, a catalyst accommodated in the exhaust collecting pipe, and a muffler detachably connected to the exhaust collecting pipe, wherein the catalyst extends in a height direction of the engine body from a base end side of the first cylinder bank to a distal end side of the first cylinder bank.
Claims8
A V-type engine, comprising:
- an engine body including
- a crankcase configured to rotatably support a crankshaft, and
- first and second cylinder banks extending from the crankcase;
- an exhaust collecting pipe connected to the first and second cylinder banks;
- a catalyst accommodated in the exhaust collecting pipe;
- and
- a muffler detachably connected to the exhaust collecting pipe,
- wherein the catalyst extends in a height direction of the engine body from a base end side of the first cylinder bank to a distal end side of the first cylinder bank, the base end side of the first cylinder bank being one end side of the first cylinder bank in the height direction of the engine body, the distal end side of the first cylinder bank being another end side of the first cylinder bank in the height direction of the engine body,
- wherein the exhaust collecting pipe includes:
- a first exhaust pipe connected to the first cylinder bank;
- a second exhaust pipe connected to the second cylinder bank;
- and
- a merging pipe connected to a merging portion of the first and second exhaust pipes, and
- wherein the merging pipe includes:
- an inlet pipe connected to the merging portion of the first and second exhaust pipes;
- and
- an accommodating pipe connected to the inlet pipe on the base end side of the first cylinder bank and extending in the height direction of the engine body from the base end side of the first cylinder bank to the distal end side of the first cylinder bank,
- the catalyst is accommodated in the accommodating pipe, and
- the muffler is detachably connected to the accommodating pipe on the distal end side of the first cylinder bank.
16 more elements
A V-type engine, comprising:
- an engine body including
- a crankcase configured to rotatably support a crankshaft, and
- first and second cylinder banks extending from the crankcase;
- an exhaust collecting pipe connected to the first and second cylinder banks;
- a catalyst accommodated in the exhaust collecting pipe;
- a muffler detachably connected to the exhaust collecting pipe;
- and
- an air cleaner connected to the first and second cylinder banks,
- wherein the catalyst extends in a height direction of the engine body from a base end side of the first cylinder bank to a distal end side of the first cylinder bank,
- wherein the air cleaner has a canister-like shape, and is arranged on an opposite side of the catalyst with the first and second cylinder banks in between when viewed in a width direction of the engine body.
7 more elements
A V-type engine, comprising:
- an engine body including
- a crankcase configured to rotatably support a crankshaft, and
- first and second cylinder banks extending from the crankcase;
- an exhaust collecting pipe connected to the first and second cylinder banks;
- a catalyst accommodated in the exhaust collecting pipe;
- and
- a muffler detachably connected to the exhaust collecting pipe,
- wherein the catalyst extends in a height direction of the engine body from a base end side of the first cylinder bank to a distal end side of the first cylinder bank,
- wherein an output portion of the crankshaft protrudes from a lower surface of the crankcase, and
- the catalyst is arranged higher than the lower surface of the crankcase.
7 more elements
Dependencies are inferred from the claim text.