Classifications

• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
  • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
  • F01P5/00—Pumping cooling-air or liquid coolants
  • F01P5/10—Pumping liquid coolant; Arrangements of coolant pumps
  • F01P5/12—Pump-driving arrangements

Definitions

• the invention relates to an internal combustion engine with water cooling, the cooling water is circulated by a centrifugal pump.
• the object of the invention is to improve the cooling water pump of an internal combustion engine so that optimal cooling performance is achieved with high operational reliability.
• cooling water pump is driven by an electric motor attached directly to it.
• the pump speed can be independent of the engine speed, so that cooling outputs can be provided which do not depend on the engine speed but on the cooling requirement of the internal combustion engine.
• operational safety is increased, since a V-belt that is exposed to wear is no longer required to drive the pump, and furthermore, cooling water can be prevented from escaping without the use of seals.
• a particularly simple construction is achieved when the pump impeller and the rotor of the electric motor are on the same shaft. It is also proposed that the electric motor is a canned motor.
• a canned motor also has the advantage that operational reliability is significantly increased since the tightness of the pump no longer depends on a seal, in particular a mechanical seal.
• the electric motor is a dry rotor, the rotor of which drives the pump impeller via a magnetic coupling. Leakage of cooling water is also reliably prevented here.
• a space-saving, light and simple design with simple assembly is achieved if the cooling water pump with a flat pump housing outside, which has the inlet and / or outlet, directly or above Sealant is attached to the outer wall of the internal combustion engine in parallel, which coincidentally has an outlet and / or inlet.
• the opening forming the outer end of the pump inlet can lie coaxially with the impeller axis and in the plane of the side wall of the pump housing.
• the pump be fastened to the internal combustion engine wall with this side wall.
• An internal combustion engine in particular a gasoline or diesel engine, has water cooling, the cooling water emerging from the engine gaps and being led to a cooler via a first line. The temperature of the hot cooling water is lowered in the cooler and then flows back to the internal combustion engine via a second line.
• a centrifugal pump is attached to the side wall of the engine above the outlet opening, the rotor of which is driven by an electric motor.
• the electric motor is attached directly to the centrifugal pump, with the electric motor housing and pump housing merging.
• the pump impeller and rotor of the electric motor are on the same shaft.
• the electric motor can be a canned motor, so that the cooling water flows through it within the canned pipe that surrounds the rotor.
• the pump and electric motor thus form a single unit, the structure of which corresponds to the pump of a heating circuit, in particular a building.
• the electric motor can also be a dry runner, the rotor of which has a Magnetic coupling drives the pump impeller.
• the pump housing has a flat outside, in which the inlet is arranged, in particular, coaxially with the rotor, this outside being fixed coaxially to the outlet of the internal combustion engine on the outside of the internal combustion engine wall in a flat and parallel manner, so that the pump is tight together with the electric motor abuts the outer wall of the engine.
• the outlet of the pump can be radial or tangential to the side of the pump housing, so that the first cooling water line is attached at one end.
• the electric motor of the pump unit is operated with the electrical voltage, in particular 12 volts or 24 volts, as generated by the dynamo of the internal combustion engine.
• Such a centrifugal pump with an electric motor can be used particularly advantageously on internal combustion engines of vehicles.

Landscapes

• Engineering & Computer Science (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Mechanical Engineering (AREA)
• General Engineering & Computer Science (AREA)
• Structures Of Non-Positive Displacement Pumps (AREA)
• Motor Or Generator Cooling System (AREA)

Applications Claiming Priority (2)

Publications (2)

Family

ID=6319438

Family Applications (1)

Country Status (2)

Cited By (5)

Families Citing this family (7)

Family Cites Families (9)

• 1987
  • 1987-01-24 DE DE19873702028 patent/DE3702028C2/de not_active Revoked
• 1988
  • 1988-01-20 EP EP88100758A patent/EP0276739A3/fr not_active Ceased

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