Heating System Utilizing Exhaust Heat with Emphasis on Defrosting Performance

A new heating system for the micro minivan (0.55 liter engine) has now been developed incorporating a heat exchanger with a gas flow control valve for recovering and using exhaust heat. The system has improved heating capacity and defrosting performance comparable to those of minivans (1.5 to 1.8 liter engines). This practical system, providing greater safety and passenger comfort in cold weather, is reported here.