摘要:
A hydraulic circuit (1) associated with an internal combustion engine (M) comprising a main cooling circuit (2) of the engine (M) provided with a circulation pump (4) for a cooling fluid, and an auxiliary preheating circuit (3) branched from the main circuit (2); the pump (4) is a rotary volumetric pump dimensioned so as to generate, at least during a warm-up transient of the engine (M), a flow rate greater than that required for the cooling of the engine (M); at least one fraction of the flow rate generated by the pump is sent to the auxiliary circuit (3) where it recovers heat from a fluid (23; 26) at higher temperature, such as the exhaust gases and/or the supercharging compressed air of the engine (M), and gives it to a fluid (24) at lower temperature, such as for example the engine oil or the passenger compartment air.
摘要:
A pump (1) comprises: a housing (2) having a peripheral portion (20), an impeller (3) rotatably mounted in the housing (2); the impeller (3) having a peripheral portion (30) arranged inside the peripheral portion (20) of the housing; a stator (5) connected to the housing (2), and a rotor (4) connected to the impeller (3); the rotor (4) comprises inserts (40) of ferromagnetic material mounted in the peripheral portion (30) of the impeller; and the stator (5) comprises a plurality of poles (6) arranged in the peripheral portion (20) of the housing; wherein the poles (6) of the stator are capable of generating a rotating electromagnetic field such as to affect the inserts (40) of ferromagnetic material of the rotor and cause a rotation of the impeller (3).
摘要:
A connection of concentrating solar power plants is described. The connection of concentrating solar power plants has two terminals for coupling respectively with internal metal tubes of two solar pipes to be connected, the two terminals being provided with coupling means for reciprocal rigid mechanical movable coupling.
摘要:
The present invention relates to a front mechanical seal for pumps with frictional rings and fluid lubrication, of the type comprising a 'rotary seal' (B) mounted on a support collar, formed of a first collar (1) and a second collar (2) prismatically coupled by means of one or more tongues (3) obtained on the second collar (2) and contained in corresponding housings (4) obtained on the first collar (1).
摘要:
A mechanical seal (1; 40; 59) configured to be interposed between a rotating shaft (2) and a fixed body (3) provided with an aperture (4) through which the shaft (2) extends, particularly for a recirculation pump of the cooling liquid of a motor, comprising a fixed part (5) and a rotating part (7) provided with respective sealing rings (6, 8) cooperating frontally with each other under an axial load exerted by a spring (33), and an absorbing material element (35) for absorbing at least temporarily possible leaks of fluid leaking through the sealing rings (6, 8) fixed to the fixed part (5).
摘要:
A thermostat (1) for cooling system of an internal combustion engine (100) comprises a sensitive element (4) comprising a capsule (40) that contains a sensitive material (5) that changes its volume when it reaches a threshold temperature, an actuation rod (8) associated to the sensitive element (5) and connected to a shutter (3) suitable for closing/opening a flow of coolant from the radiator (104) towards the engine (100) of the vehicle; and cooling means (R) coupled with the sensitive element (4) to cool the sensitive material (5), delaying the opening of the shutter (3) of the thermostat valve (2), in such a way as to stabilize the coolant at a temperature higher than the threshold temperature of the sensitive material.
摘要:
A connection of concentrating solar power plants is described. The connection of concentrating solar power plants has two terminals for coupling respectively with internal metal tubes of two solar pipes to be connected, the two terminals being provided with coupling means for reciprocal rigid mechanical movable coupling.