Engine with external exhaust gas feedback and heating device, with heat exchanger and exhaust gas feedback tube behind catalytic converter

摘要

The engine includes a catalytic converter (3), an exhaust gas tube (4), an exhaust valve (5), and exhaust gas feedback tube (8) and a heat exchanger. The heat exchanger and the exhaust gas feedback tube are behind the catalytic converter. The heat exchanger may have two exhaust gas heat exchanger tube ends (6, 7) for part flows going before and after the exhaust gas valve.