Double-ended electric supercharger
First Claim
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1. A system for a supercharger, comprising:
- an electric motor of the supercharger including a first output shaft and a second output shaft positioned on opposing sides of the electric motor and sharing a common rotational axis;
a first compressor of the supercharger rotationally coupled to the first output shaft;
a second compressor of the supercharger rotationally coupled to the second output shaft; and
a bypass passage including a valve, the bypass passage configured to divert air flow in an air conduit to both the first compressor and the second compressor.
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Abstract
Methods and systems are provided for compound boosted engine comprising an electric supercharger. In one example, the electric supercharger may be double-ended with a compressor arranged on either side of an electric motor and rotationally coupled to the electric motor via shafts. The electric supercharger may be configured to provide boost assist to a twin turbocharger system via a bypass channel adapted with a bypass valve.
33 Citations
20 Claims
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1. A system for a supercharger, comprising:
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an electric motor of the supercharger including a first output shaft and a second output shaft positioned on opposing sides of the electric motor and sharing a common rotational axis; a first compressor of the supercharger rotationally coupled to the first output shaft; a second compressor of the supercharger rotationally coupled to the second output shaft; and a bypass passage including a valve, the bypass passage configured to divert air flow in an air conduit to both the first compressor and the second compressor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An engine system, comprising:
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an engine; a first compressor driven by an exhaust turbine; an intake passage including the first compressor and a bypass valve; a second compressor including two symmetric impellers coupled via an output shaft to opposing ends of an electric motor; and a bypass passage including the second compressor, an inlet of the bypass passage coupled to the intake passage upstream of the bypass valve and downstream of the first compressor, and an outlet of the bypass passage coupled to the intake passage downstream of the bypass valve. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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17. A method for a boosted engine system, comprising:
responsive to an increase in operator torque demand, closing a waste-gate to spool up a turbocharger; closing a bypass valve coupled in an air intake passage to divert air into a bypass; and operating an electric motor of a double-ended electric supercharger positioned in the bypass to direct compressed air to an engine via each of a pair of compressors of the supercharger. - View Dependent Claims (18, 19, 20)
Specification