Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

An inlet system and an exhaust system for an internal combustion engine

IP.com Disclosure Number: IPCOM000148645D
Publication Date: 2007-Mar-30
Document File: 2 page(s) / 50K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention relates to a four-stroke, turbo-charged internal combustion engine. The turbo aggregate might at least partly receive exhaust gases from two of the cylinders at the same time (depending on what combination of firing order and valve timing is chosen). As a consequence, the turbo aggregate will not be able to use the energy in the exhaust gases from the two cylinders in an optimal manner during such time periods. The object of the invention is to provide a combustion engine provided with an inlet system and an exhaust system with a design such that exhaust gases from only one cylinder at a time are supplied to a turbine of a turbo aggregate. In case the engine is a V-8 engine with two turbo chargers the energy in the exhaust gases is equally divided between the turbo aggregates.

This text was extracted from a Microsoft Word document.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 52% of the total text.

An inlet system and an exhaust system for an internal combustion engine

The invention relates to a four-stroke internal combustion engine provided with more than one cylinder. If such an engine is provided with a turbo aggregate, the turbo aggregate might at least partly receive exhaust gases from two of the cylinders at the same time (depending on what combination of firing order and valve timing is chosen). However, the exhaust flow from two cylinders, which are in different states of the exhaust stroke, will influence on each other. As a consequence, the turbo aggregate will not be able to use the energy in the exhaust gases from the two cylinders in an optimal manner during such time periods.

The object of the invention is to provide a combustion engine provided with an inlet system and an exhaust system with a design such that exhaust gases from only one cylinder at a time are supplied to a turbine of a turbo aggregate. An embodiment of the invention is shown in Fig. 1. The internal combustion engine is in this case a V-8 engine. Consequently, the engine has eight cylinders 1-8. Four cylinders 1-4 are arranged on one side of the V-8 engine and the remaining four cylinders 5-8 are arranged on the opposite side of the V-8 engine. The V-8 engine is provided with two turbo twin scroll aggregates 9, 10 having four separate turbine inlets. The respective turbo aggregates 9, 10 comprise a compressor 9a, 10a and a turbine 9b, 10b. Two separate inlet lines 11a, b are used to supply compressed air to the engine. A first inlet line 11a is adapted to conduct compressed air from the compressor 10a to the cylinders 1, 4, 6, 7 of the engine. A second inlet line 11b is used to conduct compressed air from the compressor 9a to the cylinders 2, 3, 5, 8 of the engine. Four separate exhaust lines 12a-d are adapted to discharge exhaust gases from the engine. A first exhaust line 12a is used to conduct exhaust gases from the cylinders 1, 2 to the turbine 10b. A second exhaust line 12b is used to conduct exhaust gases from the cylinders 3, 4 to the turbine 10b. A third exhaust line 12c is used to conduct exhaust gases from the cylinders 5, 7 to the turbine 9b. A fourth exhaust line 12d is used to conduc...