| 摘要 |
<p>A coolant heater (10) (of heat exchanger type) for vehicle coolant, has an engine coolant side for coolant in an engine cooling system and an air side. Electrical heating apparatus (20, 22, 24) located within the heat exchanger for heating the coolant. Typically, the electrical heating apparatus includes electrical heating elements, extending along heat exchange tubes of the heater.</p> |
