# US 2016/0258348 A1 · Supercharging device for an internal combustion engine

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- Number: US 2016/0258348 A1
- Document ID: US20160258348A1
- Status: Published application
- Kind: A1
- Application number: 15/057,550
- Filed: 2016-03-01
- Published: 2016-09-08
- Earliest claimed: 2015-03-06
- Assignees: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
- Applicants: Dr. Ing. h.c. F. Porsche Aktiengesellschaft
- Inventors: Erwin Rutschmann; Peter Rothenberger
- Web page: https://patentgrep.com/patent/US20160258348A1

## CPC

- F02B 37/04: Engines with exhaust drive and other drive of pumps, e.g. with exhaust-driven pump and mechanically-driven second pump
- F02B 29/0412: {Multiple heat exchangers arranged in parallel or in series}
- F02B 29/0475: {the intake air cooler being combined with another device, e.g. heater, valve, compressor, filter or EGR cooler, or being assembled on a special engine location}
- F02B 33/44: Passages conducting the charge from the pump to the engine inlet, e.g. reservoirs
- F02B 39/10: electric
- F02M 35/10255: {Arrangements of valves; Multi-way valves (F02M35/10032 takes precedence; valves in the plenum chamber F02M35/10065; check valves F02M35/10275)}
- Y02T 10/12: Improving ICE efficiencies
- F02B: INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL (gas-turbine plants F02C; hot-gas or combustion-product positive-displacement engine plants F02G)
- F02M: SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- Y02T: CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

## Abstract

A supercharging device is provided for an internal combustion engine that has at least one exhaust gas turbocharger (1, 2) and at least one charge air cooler (LLK) arranged in the outflow of the exhaust gas turbocharger (1, 2). An additional electrically driven compressor (e-booster 6, 7) is arranged downstream of the charge air cooler (LLK) in a bypass (5) to the main flow line (3) to the throttle valve (4) of the internal combustion engine. The main flow line (3) can be closed by a check valve (9) that acts in the direction of a return flow.

## Claims

### Claim 1

A supercharging device for an internal combustion engine having at least one exhaust gas turbocharger with an outflow, at least one charge air cooler arranged in the outflow of the exhaust gas turbocharger, and an additional compressor in the form of an e-booster that can be driven electrically, the e-booster being arranged downstream of the charge air cooler in a bypass to the main flow line to the throttle valve of the internal combustion engine, the main flow line can be closed by way of a check valve that acts in the direction of a return flow.

### Claim 2 (depends on 1)

The supercharging device of claim 1, further comprising a charge air cooler arranged in the outflow of the e-booster upstream of the feed of the additionally compressed air into the main flow line to the throttle valve.

### Claim 3 (depends on 1)

The supercharging device of claim 1, wherein the at least one exhaust gas turbocharger is a first exhaust gas turbocharger, the supercharging device further comprising at least a second exhaust gas turbocharger or charge air cooler connected downstream of the first exhaust gas turbocharger, the supercharged air being fed to a main flow line, in which the check valve is arranged and from which the bypass to the e-booster branches off.

### Claim 4 (depends on 1)

The supercharging device of claim 1, wherein the check valve that prevents the return flow of the charge air in the direction of the exhaust gas turbocharger is dimensioned to open only if a sufficiently high charge pressure is generated by the exhaust gas turbocharger.