Reciprocating engine system with electrically driven compressor and method for operating same

US11199127B2 · kind B2 · utility

Assignee

• AI ALPINE US BIDCO INC. · US

Inventors

• Jassin Marcel Fritz · Munich, DE
• Hang Lu · Kufstein, AT

Key dates

• Filing date: Jan 11, 2018
• Grant date: Dec 14, 2021
• Expiry date: Jan 11, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/12
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A reciprocating engine system includes a turbocharger system including a mechanically driven compressor, an electrically driven compressor, and a compressor bypass valve. A control system is programmed for generating control signals for: under nominal full load operating conditions, minimizing gas flow through the compressor bypass valve and compressing gas within the electrically driven compressor to maintain a speed set point or a full load power set point of the reciprocating engine system, under off nominal full load operating conditions wherein an efficiency of the mechanically driven compressor is reduced, compressing gas within the electrically driven compressor to compensate for the reduced efficiency of the mechanically driven compressor and to maintain the speed set point or the full load power set point of the reciprocating engine system, and under partial load operating conditions, partially diverting the gas flow through the compressor bypass valve in response to the reduced load.