Internal combustion engine with bypassable start-up catalyst

Abstract

Abstract In internal combustion engines with a bypassable start-up catalytic converter, it is proposed, for more reliable and faster switching between a cold running position (A) activating the start-up catalytic converter (1) and a warm running position (B) bypassing the start-up catalytic converter (1), that the control member be designed as an annular exhaust sliding sleeve (4, 4a), coaxial with and capable of sliding along the exhaust pipe (19) and actuatable outside a housing wall (4'), and that the exhaust sliding sleeve (4) has through passages (5) which free the flow path (3') bypassing the start-up catalytic converter (1) in the warm running position (B), and that downstream of the exhaust sliding sleeve (4) a flow divider (7) be arranged coaxially with the exhaust pipe (19). <IMAGE>

Inventors

• 👤 Reinhard Koppe
• 👤 Paul Dr. Zelenka
• 👤 Ralf Dipl.-Ing. Rokita

Bibliographic Details