Purification system
AssigneeIsuzu Motors Limited
InventorYasuhiro Okubo
Life of this patent
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Abstract
[Solution] A purification system includes an engine, a catalyst that causes adsorbed ammonia to react with nitrogen oxide contained in exhaust gas of the engine to purify the exhaust gas, a motor that is driven to compensate for the difference between a) an engine load of the engine and b) a driving load, when the driving load of a driven device driven by the engine changes, a battery that supplies electricity to the motor, and a setting part that sets a target value so that the target value of the adsorption amount of the catalyst increases as the remaining capacity of the battery increases.
Claims8
A purification system comprising:
- an engine;
- a catalyst that causes adsorbed ammonia to react with nitrogen oxide contained in exhaust gas of the engine to purify the exhaust gas;
- a motor that assists the engine;
- a battery that supplies electricity to the motor;
- an injection controller that controls an amount of urea to be injected so that an adsorption amount of the ammonia adsorbed to the catalyst increases as remaining capacity of the battery increases;
- and
- a setting part that sets a target value so that the target value of the adsorption amount of the catalyst increases as the remaining capacity increases,
- wherein the injection controller injects the urea so that the adsorption amount becomes the target value.
A purification system, comprising:
- an engine;
- a catalyst that causes adsorbed ammonia to react with nitrogen oxide contained in exhaust gas of the engine to purify the exhaust gas;
- a motor that assists the engine;
- a battery that supplies electricity to the motor;
- an injection controller that controls an amount of urea to be injected so that an adsorption amount of the ammonia adsorbed to the catalyst increases as remaining capacity of the battery increases;
- and
- a drive controller that causes the engine to operate in a steady state so that i) an exhaust gas temperature of the engine becomes equal to or higher than an activation temperature of the catalyst and ii) an engine load of the engine is constant.
Dependencies are inferred from the claim text.