Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture

FMECHANICAL ENGINEERING LIGHTING HEATING WEAPONS BLASTING ENGINES OR PUMPS F02Combustion engines F02MSUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

F02M31/00Apparatus for thermally treating combustion-air, fuel, or fuel-air mixture

F02M31/005using a heat-pipe F02M31/02for heating F02M31/04combustion-air or fuel-air mixture F02M31/042Combustion air F02M31/045Fuel-air mixture F02M31/047for fuel enriched partial mixture flow path F02M31/06by hot gases F02M31/062with thermostat and pneumatic actuator both working on the air mixture control valve F02M31/064pneumatically controlled F02M31/066operated manually F02M31/068particular constructional aspects of the switching devices F02M31/07Temperature-responsive control F02M31/08the gases being exhaust gases F02M31/0805Pneumatic control of the amount of exhaust gas or combustion air directed to the heat exchange surfaces F02M31/081Manual switching of the fluids directed to the heat exchange surfaces F02M31/0815Heat exchange surfaces arranged inside a flange F02M31/082Particular shape of air input passage near to the branch F02M31/0825Particular constructional characteristics of the heat exchange surfaces F02M31/083Temperature-responsive control of the amount of exhaust gas or combustion air directed to the heat exchange surface F02M31/087Heat-exchange arrangements between the air intake and exhaust gas passages F02M31/093Air intake passage surrounding the exhaust gas passage Exhaust gas passage surrounding the air intake passage F02M31/10by hot liquids F02M31/102Particular constructional characteristics of the shape of the heat exchange surfaces F02M31/105Particular constructional characteristics of the switching apparatus F02M31/107Controlled or manual switching F02M31/12electrically F02M31/125Fuel F02M31/13Combustion air F02M31/135Fuel-air mixture F02M31/14by using heat from working cylinders or cylinder heads F02M31/145with particular constructional means F02M31/16Other apparatus for heating fuel F02M31/163Preheating by burning an auxiliary mixture F02M31/166with mechanical generation of heat F02M31/18to vaporise fuel F02M31/183Control F02M31/186with simultaneous mixing of secondary air F02M31/20for cooling F02M31/205Control