Exhaust gas purification device
AssigneeYanmar Co., Ltd.
InventorsMasataka MITSUDA, Hiroshi UEHARA
Life of this patent
Estimating the term…
Abstract
An exhaust gas purification device capable of enhancing handling operability such as maintenance of an engine includes two gas purification bodies which purity exhaust gas discharged from the engine, inner cases in which the gas purification bodies are incorporated, and outer cases in which the inner cases are incorporated. The outer cases are arranged side by side in a moving direction of exhaust gas and connected to each other. One of the adjoining inner cases is inserted into the other inner case to form a double-layer structure. A loosely-fitting gap is formed between an inner side surface of the one inner case and an outer side surface of the other inner case.
Claims9
1-5. (canceled)
An exhaust gas purification device comprising:
- two gas purification bodies for purifying exhaust gas discharged from an engine;
- inner cases for incorporating the gas purification bodies;
- outer cases for incorporating the inner cases, the outer cases being arranged side by side in an exhaust gas moving direction and connected to each other, wherein one of the adjoining inner cases is inserted into the other inner case to form a double-layer structure, and a loosely-fitting gap is formed between an inner side surface of the one inner case and an outer side surface of the other inner case;
- and
- an exhaust gas inlet pipe for exhaust gas from the engine flowing into, and an exhaust gas outlet pipe for exhaust gas passing through the gas purification body flowing out,
- wherein the exhaust gas inlet pipe is mounted on an exhaust gas upstream side outer case such that an exhaust gas introducing passage is formed by the outer side surface of the exhaust gas upstream side outer case and the inner side surface of the exhaust gas inlet pipe, and at least one of the outer side surface of the exhaust gas upstream side outer case and the inner side surface of the exhaust gas inlet pipe is provided with a rectifier which rectifies a flow of exhaust gas.
An exhaust gas purification device comprising:
- two gas purification bodies for purifying exhaust gas discharged from an engine;
- inner cases for incorporating the gas purification bodies;
- outer cases for incorporating the inner cases, the outer cases being arranged side by side in an exhaust gas moving direction and connected to each other, wherein one of the adjoining inner cases is inserted into the other inner case to form a double-layer structure, and a loosely-fitting gap is formed between an inner side surface of the one inner case and an outer side surface of the other inner case;
- an exhaust gas inlet pipe for exhaust gas from the engine flowing into, and an exhaust gas outlet pipe for exhaust gas passing through the gas purification body flowing out from,
- a silencer having the exhaust gas outlet pipe is mounted on the exhaust gas downstream side outer case, an exhaust gas introducing pipe extending in parallel to the exhaust gas moving direction is incorporated in the silencer, and an exhaust gas upstream side of the exhaust gas introducing pipe enters the exhaust gas downstream side inner case.
Dependencies are inferred from the claim text.