Compressor pre-rotation control method

A compressor and pre-rotation technology, which is applied in the direction of engine control, electrical control, mechanical equipment, etc., can solve problems such as limiting the driving conditions of the compressor, and achieve the effect of increasing the maximum speed and improving durability
CN104747280BActive Publication Date: 2019-05-03VOLVO CAR CORP
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
VOLVO CAR CORP
Publication Date
2019-05-03

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Abstract

A compressor (11) is connected via a clutch (13) to a crankshaft of an internal combustion engine provided with a turbocharger (12). A compressor pre-spin operation is used to reduce the transferred energy and wear when the clutch is engaged. The pre-spin is achieved by controlling the air mass flow over the compressor, wherein the air mass flow over the compressor is controlled by controlling a bypass throttle angle of a bypass throttle (18) provided in a bypass conduit (17) bypassing the compressor.
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Description

technical field

[0001] The invention relates to a method of controlling the pre-rotation operation of a compressor of an internal combustion engine. When the compressor clutch is engaged, the wear on the clutch is proportional to the energy transferred. To reduce compressor clutch wear or increase the maximum engine speed allowed to engage the compressor, compressor pre-rotation is utilized when the clutch is engaged to reduce the amount of energy transferred. Background technique

[0002] In order to increase the pressure and air density of the air supplied to the internal combustion engine, the use of compressors or superchargers is a known method. The increased amount of air provides more oxygen in each working cycle, which enables an increased amount of fuel to be injected, allowing the engine to generate more power.

[0003] When the compressor clutch is engaged, the speed of the compressor is generally low, and the speed of the crankshaft, which is engaged with the c...

Claims

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