| 摘要 |
<p>An improved motor vehicle engine compartment (10) for protecting the engine from cold by retaining engine heat includes conventional side walls (11, 12), hood (13) and cowling (14). A front wall (16) adjacent the radiator (R) includes a series of movable louvers (22) for covering and uncovering a series of openings (21). A lower wall (17) includes a series of movable louvers (24) for covering and uncovering a series of openings (23). Together these walls and the side walls, hood and cowling form a substantially hermetically sealed enclosure when the louvers are in the covering positions. Actuators (28, 29), acting through connecting rods (26, 27), move the louvers (22, 24) to the covering and uncovering positions. A control circuit (40), responsive to low ambient temperature, high engine temperature and operation of the engine, controls the operation of the actuators (28, 29).</p> |
