Charge air systems for turbocharged four-cycle internal combustion engines
AssigneeHoneywell International Inc.
InventorsWilliam E. Woollenweber, Edward M. Halimi
Life of this patent
Estimating the term…
Abstract
Charge air systems may include a small electric motor-driven compressor for supplying charge air to four-cycle internal combustion engines, including systems with turbocharger charge air compressors in series and parallel connection. The disclosed charge air systems can provide an effective charge air flow path to the internal combustion engine and avoids air flow restrictions at high engine operating speeds.
Claims13
A charge air system connected with the charge air intake for a four-cycle engine, comprising a charge air compressor capable of supplying the internal combustion engine's charge air requirements only up to about 2500 rpm, said charge air compressor having an inlet and an outlet, an electric motor connected to drive said charge air compressor, a first charge air conduit connected with the outlet of the charge air compressor, a turbocharger having an exhaust gas driven turbine connected with the exhaust gas from the four-cycle engine and a turbocharger compressor having an air inlet and a compressed air outlet, a second charge air conduit connected with the compressed air outlet of said turbocharger compressor, a junction for said first and second charge air conduits, said junction being connected with said charge air intake, a charge air check valve located adjacent said junction for one of said first and second charge air conduits, and a control for said electric motor, said control energizing and maintaining said electric motor at a predetermined minimum speed after the internal combustion engine is started and being responsive to, at least, an engine acceleration demand signal.
An internal combustion engine system, comprising
- an internal combustion engine having a charge air intake and an exhaust outlet;
- a charge air system connected with said charge air intake, including a turbocharger having an exhaust-gas driven turbine connected with said exhaust outlet and a turbocharger charge air compressor driven by said exhaust gas driven turbine and an electric motor-driven charge air compressor capable of supplying the charge air requirements of the internal combustion engine up to about 2500 rpm, said turbocharger charge air compressor and said motor-driven charge air compressor having charge air outputs connected to a charge air swing valve and to a common charge air conduit connected with the charge air intake of the internal combustion engine;
- and
- a control for said small motorAriven charge air compressor, said control energizing and maintaining said electric motor at a predetermined minimum speed after the internal combustion engine is started.
Dependencies are inferred from the claim text.