Supercharged boost-assist engine brake

US8281587B2 · kind B2 · utility

Assignee

• International Engine Intellectual Property Company, LLC · US

Inventors

• Qianfan Xin · Lake Zurich, US
• Martin R. Zielke · Lockport, US
• Michael D. Bartkowicz · Oswego, US
• Luis Carlos Cattani · Aurora, US
• Steve Gravante · Westchester, US
• Timothy Prochnau · Vernon Hills, US
• Antoun Y. Calash · Elk Grove Village, US
• John L. Cagney · Downers Grove, US

Key dates

• Filing date: Aug 13, 2009
• Grant date: Oct 9, 2012
• Expiry date: Apr 7, 2031

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02T10/40
• WIPO field: Engines, pumps, turbines
• WIPO sector: Mechanical engineering

Abstract

A control system for engine braking for a vehicle powered by a turbocharged engine uses a supercharger to assist a turbocharger compressor to boost turbocharger air flow into the engine cylinders. An engine driven air pumping device draws ambient air, or alternately exhaust gas through the pump inlet, compresses the air, and delivers the compressed air through the pump outlet to the turbocharger compressor inlet or alternately the turbocharger compressor outlet. The increased air flow into the cylinders and out of the cylinder exhaust valves increases retarding power of the vehicle.