US 12,203,430 B2Granted

Engine

AssigneeYanmar Holdings Co., Ltd.

InventorShinsuke Kasazaki

Life of this patent

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Abstract

An engine is equipped with an engine body, a turbocharger, an exhaust gas purifier, an exhaust communication pipe. The turbocharger is connected to the engine body. The exhaust gas purifier purifies exhaust gas discharged from the turbocharger. The exhaust communication pipe connects the turbocharger with the exhaust gas purifier. The exhaust communication pipe includes: a first connection member that is connected to the turbocharger, and a second connection member that connects the first connection member with the exhaust gas purifier. A downstream end portion of the first connection member has an inner peripheral face having a cross-section of a circular shape. An upstream end portion of the first connection member has an inner peripheral face having a cross-section of an abnormal-shape that is different from the inner peripheral face of the downstream end portion.

Claims6

Dependent claims

An engine comprising:

a turbocharger;
an after-treatment unit that purifies exhaust gas discharged from the turbocharger;
and
an exhaust communication pipe that connects the turbocharger with the after-treatment unit,
wherein
the exhaust communication pipe includes:
a first connection member that is connected to the turbocharger, and
a second connection member that connects the first connection member with the after-treatment unit,
a downstream end portion of the first connection member has an inner peripheral face having a predetermined cross-sectional length, and
an upstream end portion of the first connection member has an inner peripheral face having a predetermined cross-sectional length that is different from the predetermined cross-sectional length of the inner peripheral face of the downstream end portion, and wherein
the downstream end portion is connected to the second connection member, and the upstream end portion is connected to the turbo charger.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/646,701Filed 25 Apr 2024 · continuation
Priority: JP 2021-1809035 Nov 2021
Published: US 2024/0295202 A15 Sep 2024
Granted: 21 Jan 2025
Term ends: Not estimatedThe source records don’t support an estimate.

Classification15 codes

F01N 13/00
Exhaust or silencing apparatus characterised by constructional features
F02M 26/04
EGR systems specially adapted for supercharged engines: with a single turbocharger
F01N 3/00
Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise
F01N 13/1805
Construction facilitating manufacture, assembly, or disassembly: fixing exhaust manifolds, exhaust pipes or pipe sections to each other, to engine…

Family

Application18/048,290Parent of this continuation · filed 20 Oct 2022
US 2024/0295202 A1Pre-grant publication · published 5 Sep 2024
US 12,000,362 B2Parent of this continuation
US 2023/0145865 A1Published application
US 12,203,430 B2This patent

From the US filing history. Foreign family members aren’t listed.