| 摘要 |
1,179,472. Heating and cooling engine charge. J.L. GRATZMULLER. Jan.27, 1967 [Feb.3, 1966], No.4070/67. Heading F1B. The temperature of the air delivered to the engine by a compressor 10 is maintained within predetermined limits by a heat-excharger 52 surrounding the intake manifold 16, the heatexcharger being connected in the engine liquid cooling circuit, which circuit has associated therewith a fan-cooled radiator 56 and a heater 38, the fan and heater being controlled by a thermostat 26. The cooling liquid from radiator 56 is forced by pump 42 through heater 38 and heatexcharger 52 to the cylinder block. Under cold conditions low power outputs thermostat 26 switches on the burner 40 of the heater 38 to heat the cooling circuit liquid and, through heater-excharger 52, heat the compressed charge. At high power output thermostat 26 switches off the boiler 38 and switches on fan 68 to cool the cooling circuit liquid and hence the compressed charge. The engine has a compression rated lower than 12:1. |
