Title:
DENITRATION METHOD FOR EXHAUST OF INTERNAL COMBUSTION ENGINE
Document Type and Number:
Japanese Patent JPH01318716
Kind Code:
A
Abstract:
PURPOSE:To prevent the exhaust of NOx by mixing ammonia and/or its precursor respectively in the gas inside a cylinder just before opening an exhaust valve or into an exhaust gas just after opening the exhaust valve and resolving a nitrogen oxide inside the exhaust. CONSTITUTION:The ammonia injection valve 8 injecting ammonia into a cylinder 2 is provided on a cylinder head 3 in case of applying for a large sized low speed two cycle diesel engine. A crank angle is then detected by a crank angle sensor 12 so as to open an ammonia injection valve 8 prior to opening (5-10 deg.CA) an exhaust valve 5, the ammonia injection valve 8 is opened by an opening controller 11 based on the detected crank angle and the ammonia of after being subjected to pressure rising by the pump 9 connected to a bomb 10 is made to inject into a combustion chamber. The nitrogen oxide of a high temp. gas inside is resolved with the existence of oxygen to realize pollution free.
Inventors:
NAKAGAWA HIROSHI
MURAKAMI NOBUAKI
TAYAMA KEIJIRO
YOSHIHARA SADAO
MURAKAMI NOBUAKI
TAYAMA KEIJIRO
YOSHIHARA SADAO
Application Number:
JP14801088A
Publication Date:
December 25, 1989
Filing Date:
June 17, 1988
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
F02M25/00; B01D53/56; F01N3/08; F02B47/04; F02B3/06; F02B75/02; (IPC1-7): B01D53/34; F01N3/08; F02M25/00
Domestic Patent References:
| JPS6119940A | 1986-01-28 | |||
| JPS55104513A | 1980-08-11 | |||
| JPS586045A | 1983-01-13 |
Attorney, Agent or Firm:
Akasaka Saka (2 people outside)
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