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Electromotor for electrical compressor of internal combustion engine

A technology for electric compressors and electric motors, applied in the direction of magnetic circuit rotating parts, magnetic circuit shape/style/structure, magnetic circuit static parts, etc., can solve the problems of poor acoustic characteristics of motors, high impact force of stator teeth, etc., to achieve Effects of improved acoustic properties, ease of construction, improved stability

Inactive Publication Date: 2017-02-22
PIERBURG GMBH & CO KG NEUSS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The motor described has the disadvantage that the combination of a bipolar rotor and a three-slot stator results in high impact forces on the stator teeth, thereby generating chatter, which leads to poor acoustic properties of the motor
This disadvantage is magnified when large slot openings are provided in the crown support for the insertion of coils

Method used

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  • Electromotor for electrical compressor of internal combustion engine
  • Electromotor for electrical compressor of internal combustion engine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0021] figure 1 The compressor shown consists of a volute 10 , by which air is compressed in a known manner by means of an impeller arranged rotatably in the volute 10 .

[0022] For this purpose, the impeller is fixed on the end of the drive shaft 12 of the electric motor 14 according to the invention. The drive shaft is mounted in a two-part motor housing 16 . The first bearing 18 is arranged in a bearing receptacle 20 on the bottom 22 of a pot-shaped first motor housing part 24 . The second bearing 25 arranged on the opposite end of the electric motor 14 is arranged in a second bearing receptacle 26 formed on the bottom 27 of a second motor housing part 28 , the second The motor housing part is pushed into the first motor housing part 24 with one or more seals 30 connected in between and has an electronics cavity 32 on the side opposite the motor 14, the control of the motor 14 A circuit board is disposed in the electronics cavity. To produce the electrical connection, ...

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Abstract

The invention relates to an electromotor (14) of an electrical compressor of an internal combustion engine. The electromotor includes a rotor (58); a drive shaft (12), wherein the rotor is fixedly arranged on the drive shaft at least in an anti-torque manner; a stator (36) radially surrounding the rotor (58), wherein the stator is fixed in an electromotor housing (16) and has three stator teeth (50), windings (35) are arranged on roots (52) of the stator teeth, the windings are limited in radial direction through the tooth crowns (54) having a size larger than that of the roots (52). To achieve a bipolar execution mode having excellent acoustics performance, according to the invention, the stator (36) has a radial inner stator member (46) on which stator teeth (50) are formed, the stator teeth are connected to each other in a radial inner zone and can be wound from an outer part, wherein radial outer groove holes (56) among the tooth crowns (50) are sealed through a return ring (48) forming a second stator member, and the return ring surrounds three stator teeth (50) in the radial direction.

Description

technical field [0001] The invention relates to an electric motor for an electric compressor of an internal combustion engine with a rotor, a drive shaft and a stator radially surrounding the rotor, the rotor being arranged at least torsionally fixedly on the drive shaft, the The stator is fixed in the motor housing and has three stator teeth, on the roots of which are arranged windings which are limited in the radial direction by tooth crowns which in the circumferential direction have a larger diameter than the tooth roots. size of. Background technique [0002] Electric compressors of this type are used in modern internal combustion engines in order to actively provide sufficient intake pressure for use in a short period of time, for example in the event of a sudden load rise in demand. Especially for internal combustion engines with small displacement and high power, such electric compressors achieve either an additional recompression of the exhaust gas turbocharger or ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02K1/14H02K1/27
CPCH02K1/145H02K1/2713H02K1/276F02B39/10H02K21/16H02K1/148
Inventor S.德温特
Owner PIERBURG GMBH & CO KG NEUSS