초록 ▼

A cabin heating arrangement is associated with an evaporative type engine cooling system and arranged so that immediately after a cold engine start when the cooling circuit of the engine is completely filled with liquid coolant coolant is inducted from a first port located immediately adjacent the m

A cabin heating arrangement is associated with an evaporative type engine cooling system and arranged so that immediately after a cold engine start when the cooling circuit of the engine is completely filled with liquid coolant coolant is inducted from a first port located immediately adjacent the most highly heated structure of the engine and pumped through the core of the cabin heater. Upon the coolant temperature rising sufficiently, coolant vapor is inducted from a second port located above the first one and introduced into the heater core.

대표청구항 ▼

In an automotive vehicle having a passenger compartment and an engine compartment: an engine, said engine being disposed in said engine compartment and having structure which is subject to high heat flux; a cooling system for removing heat from said engine; and a passenger compartment heating arrang

In an automotive vehicle having a passenger compartment and an engine compartment: an engine, said engine being disposed in said engine compartment and having structure which is subject to high heat flux; a cooling system for removing heat from said engine; and a passenger compartment heating arrangement incorporated with said cooling system, said cooling system and said passenger heating arrangement comprising: a coolant jacket disposed about said engine into which coolant is introduced in liquid form and allowed to boil; a radiator fluidly communicated with said coolant jacket, said radiator being arranged to receive gaseous coolant produced by the boiling of the liquid coolant in said coolant jacket and condense same to its liquid form; means for returning liquid coolant from said radiator to said coolant jacket in a manner which maintains the level of coolant in said coolant jacket at a first predetermined level, said first predetermined level being selected to immerse said strcture in a predetermined depth of liquid coolant; a cabin heater disposed in said passenger compartment, said cabin heater including a core through which coolant may pass; a first port formed in said coolant jacket at a level higher than said first predetermined level; a second port formed in said coolant jacket at a level lower than said first predetermined level and proximate said structure; a circulation pump in fluid communication with said core and said first and second ports, said pump being selectively energizable to pump coolant from said first port to said second port via said core during a first mode of operation and pump coolant from said second port to said first port via said core during a second mode of operation.