초록 ▼

An internal combustion engine with an exhaust gas turbo-charger and with a control valve arranged in the exhaust gas manifold which responds to the charging pressure of the supercharging blower; the control valve controls an exhaust gas by-pass line by-passing the exhaust gas turbine, while a cataly

An internal combustion engine with an exhaust gas turbo-charger and with a control valve arranged in the exhaust gas manifold which responds to the charging pressure of the supercharging blower; the control valve controls an exhaust gas by-pass line by-passing the exhaust gas turbine, while a catalyst is arranged in the exhaust gas manifold either upstream or downstream of the exhaust gas turbine.

대표청구항 ▼

An internal combustion engine with an exhaust-gas line, an exhaust-gas turbo-charger including an exhaust-gas turbine in said exhaust-gas line and a supercharging blower driven by the exhaust-gas turbine, a catalyst in said exhaust-line, an auxiliary by-pass line branching off said exhaust-gas line

An internal combustion engine with an exhaust-gas line, an exhaust-gas turbo-charger including an exhaust-gas turbine in said exhaust-gas line and a supercharging blower driven by the exhaust-gas turbine, a catalyst in said exhaust-line, an auxiliary by-pass line branching off said exhaust-gas line in by-passing relationship to said exhaust-gas turbine and said catalyst, a control valve means responsive to the charging pressure of air supplied by the supercharging blower to the engine and located between the exhaust gas line and the by-pass line for controlling flow through said by-pass line, and means in communication with said charging pressure for opening said control valve when said charging pressure reaches a predetermined value so as to cause that portion of the exhaust gases which could result in thermal overloading of the catalyst to flow through said by-pass line and around said catalyst.