Apparatus for purifying the exhaust gas of diesel engines
AssigneeHino Motors, Ltd.
InventorsMasatoshi Shimoda, Mitsuru Hosoya
Life of this patent
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Abstract
An apparatus is disclosed for purifying the exhaust gas of a diesel engine by reducing the contents of soluble organic fractions which are particulates. The apparatus comprises a catalyzer provided on an exhaust pipe, a cooler provided around either a portion of the pipe between the catalyzer and the engine or the catalyzer in itself for cooling the gas flowing through the pipe, a temperature sensor for detecting the temperature of the gas flowing through the pipe, a tachometer for detecting the rotating speed of the engine, a load sensor for detecting the load on the engine, a controller for controlling the cooler on the basis of the respective detection outputs from the sensors.
Claims9
An apparatus for purifying exhaust gas from a diesel engine, comprising:
- a catalyzer coupled to an exhaust pipe extending from the diesel engine;
- a cooler positioned adjacent to the catalyzer for transferring heat from the exhaust gas to a coolant supplied by the cooler, thereby reducing the temperature of the exhaust gas flowing through the catalyzer;
- a temperature sensor coupled to the exhaust pipe for detecting the temperature of the exhaust gas;
- a tachometer for detecting the rotating speed of the diesel engine;
- a load sensor for detecting the load on the diesel engine;
- and
- a controller for controlling a rate at which the coolant is supplied by the cooler in response to the signals received from the temperature sensor, the tachometer and the load sensor.
Dependencies are inferred from the claim text.