Diesel engine
AssigneeYanmar Holdings Co., Ltd.
InventorYoshihiro Nuta
Life of this patent
Estimating the term…
Abstract
A diesel engine is provided with an exhaust after-treatment device for purifying exhaust gas. The exhaust after-treatment device includes a DPF that collects a particulate matter included in the exhaust gas, and an SCR that reduces nitrogen oxides included in the exhaust gas through addition of urea. The DPF is arranged to extend in an engine width direction orthogonal to both the engine front-rear direction and an up-down direction, on one side of the engine front-rear direction with respect to the DPF. The DPF and the SCR are attached to the diesel engine.
Claims8
A diesel engine equipped with an exhaust after-treatment device to purify exhaust gas, wherein
- the exhaust after-treatment device has a first case and a second case for treating the exhaust gas,
- the first case is located extending in an engine front-rear direction parallel to a crankshaft,
- the second case is located extending in an engine width direction orthogonal to both the engine front-rear direction and an up-down direction, on one side of the engine front-rear direction with respect to the first case, and
- the first case and the second case are attached to a cylinder head of the diesel engine, and
- the first case has an exhaust outlet at an end on a far side from the second case in the engine front-rear direction to discharge the exhaust gas after a particulate matter is collected, and
- a second case pipe connects the exhaust outlet of the first case and an exhaust inlet of the second case.
A diesel engine equipped with an exhaust after-treatment device to purify exhaust gas, wherein
- the exhaust after-treatment device has a DPF and a SCR for treating the exhaust gas,
- the DPF is located extending in an engine front-rear direction parallel to a crankshaft and collects particulate matter contained in the exhaust gas,
- the SCR is located extending in an engine width direction orthogonal to both the engine front-rear direction and an up-down direction, on one side of the engine front-rear direction with respect to the first case, and reduces nitrogen oxides contained in the exhaust gas by adding urea,
- the DPF and the SCR are attached to a cylinder head of the diesel engine,
- the DPF has an exhaust outlet at an end on a far side from the SCR in the engine front-rear direction to discharge the exhaust gas after the particulate matter is collected, and
- an SCR pipe connects the exhaust outlet of the DPF and an exhaust inlet of the SCR.
A diesel engine equipped with an exhaust after-treatment device to purify exhaust gas, wherein
- the exhaust after-treatment device has a first case and a second case for treating the exhaust gas,
- the first case is located extending in an engine front-rear direction parallel to a crankshaft,
- the second case is located extending in an engine width direction orthogonal to both the engine front-rear direction and an up-down direction, on one side of the engine front-rear direction with respect to the first case,
- the first case and the second case are attached to a cylinder head of the diesel engine, and
- the diesel engine further comprises a single bracket is provided to secure both the first case and the second case to the diesel engine.
Dependencies are inferred from the claim text.