APPARATUS FOR DETERMINING AN ABNORMALITY OF A CONTROL VALVE OF AN INTERNAL COMBUSTION ENGINE
First Claim
1. An apparatus for determining an abnormality of a control valve of an internal combustion engine, the apparatus being applied to an internal combustion engine having:
- a plurality of superchargers each comprising, a turbine disposed in an exhaust gas passage of the engine and driven by energy of an exhaust gas flowing in the exhaust gas passage, and a compressor disposed in an intake air passage of the engine and driven by the driven turbine and then compress an air in the intake air passage; and
a plurality of control valves each changing an amount of the air or a magnitude of the energy of the exhaust gas depending on an opening degree thereof,the apparatus comprising;
an opening degree obtaining means for obtaining each opening degree of control valves belonging to a first control valve group including only a part of the plurality of control valves;
a pressure obtaining means for obtaining a pressure for determination, the pressure for determination being at least one of;
a pressure of the air in at least one location in the intake air passage; and
a pressure of the exhaust gas in at least one location in the exhaust gas passage,an abnormality determining means for determining whether or not at least one control valve among control valves belonging to a second control valve group including control valves except for control valves belonging to the first control valve group among the plurality of control valves being abnormal by using;
at least one opening degree obtained by the opening degree obtaining means; and
the pressure for determination obtained by the pressure obtaining means.
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Accused Products
Abstract
An apparatus for determining an abnormality of a control valve, the apparatus being applied to an internal combustion engine having: a plurality of superchargers and a plurality of control valves, and carries out an abnormality determination of at least one control valve. The apparatus determines, based on each opening degree of control valves belonging to a first control valve group including only a part of the plurality of control valves and at least one of: a pressure of the air in at least one location in the intake air passage; and a pressure of the exhaust gas in at least one location in the exhaust gas passage, whether or not a control valve belonging to a second control valve group that includes control valves except for control valves belonging to the first control valve group among the plurality of control valves is abnormal.
25 Citations
12 Claims
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1. An apparatus for determining an abnormality of a control valve of an internal combustion engine, the apparatus being applied to an internal combustion engine having:
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a plurality of superchargers each comprising, a turbine disposed in an exhaust gas passage of the engine and driven by energy of an exhaust gas flowing in the exhaust gas passage, and a compressor disposed in an intake air passage of the engine and driven by the driven turbine and then compress an air in the intake air passage; and a plurality of control valves each changing an amount of the air or a magnitude of the energy of the exhaust gas depending on an opening degree thereof, the apparatus comprising; an opening degree obtaining means for obtaining each opening degree of control valves belonging to a first control valve group including only a part of the plurality of control valves; a pressure obtaining means for obtaining a pressure for determination, the pressure for determination being at least one of;
a pressure of the air in at least one location in the intake air passage; and
a pressure of the exhaust gas in at least one location in the exhaust gas passage,an abnormality determining means for determining whether or not at least one control valve among control valves belonging to a second control valve group including control valves except for control valves belonging to the first control valve group among the plurality of control valves being abnormal by using;
at least one opening degree obtained by the opening degree obtaining means; and
the pressure for determination obtained by the pressure obtaining means. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification