DE2034312C3

DE2034312C3 - Exhaust system for six-cylinder in-line internal combustion engine with exhaust gas turbocharger

Info

Publication number: DE2034312C3
Application number: DE2034312A
Authority: DE
Inventors: Dieter 6900 Heidelberg Bergmeier; Ewald Jacoby; Hansjoachim Dr.-Ing. 6710 Frankenthal Klaue; Josef Dr.-Ing. Reisacher
Original assignee: Kuehnle Kopp and Kausch AG
Current assignee: Howden Turbo GmbH
Priority date: 1970-07-10
Filing date: 1970-07-10
Publication date: 1974-01-10
Also published as: DE2034312B2; DE2034312A1

Description

Verluste. Außerdem ist bei dieser Ausführung die kleinsie Mengeniiberströmung von einer Leitung, die gerade den größten Energiestrom führt, in die benachbarte Leitung zu erwarten. Dadurch ergeben sich im Zusammenhang mit der Abgasturbine in einflutiger Ausführung des Spiralgehäuses beträchtliche Energiegewinne. Diese Energiegewinne gestatten es wiederum, auf die Ausnutzung der Abgasenergie von zwei Zylindern zu verzichten, wodurch die einfaciie und geschlossene Ausführung des Auspuffsystems ermöglicht wird.Losses. In addition, in this design, the small volume overflow is from a line that just leads the largest flow of energy to be expected in the neighboring line. Result from this in connection with the exhaust gas turbine in the single-flow version of the volute casing Energy gains. These energy gains make it possible in turn to utilize the Foregoing exhaust energy from two cylinders, creating the simplicity and closed design the exhaust system is made possible.

Durch die strömungsgünstige Ausführung des Abgassystems der vier ausgenutzten Zylinder ergibt sich in ihnen ein verhältnismäßig flacher Veriauf des Ladedruckes über der Motordrehzahl, so daß die Überbeanspruchung durch Zünddrücke und die unnötigen hohen Belastluftmengen bei hohen Motordrehzahlen wegfallen. Due to the streamlined design of the exhaust system, the four cylinders used result in them a relatively flat curve of the boost pressure over the engine speed, so that the Overstressing caused by ignition pressures and the unnecessarily high amounts of load air at high engine speeds are eliminated.

Hierzu 1 Blatt Zeichnungen1 sheet of drawings

Claims

ii ^J 2 ^J 2

but cannot be seen from it. It's all cylinders

Claim: connected to the exhaust gas turbocharger; it is also missing

the direct connection of the exhaust turbine to the cylinder exhaust system for a six-cylinder in-line head. .,.
Internal combustion engine with exhaust gas turbocharging 5 Dis deutsche Auslegeschrif.t 1 297 946 does bring about burst operation of the turbine, in which two, on the other hand, the formation of a common exhaust gas cylinder in a common exhaust gas duct within the cylinder head; Moreover, puffing is characterized in that, however, the design of the exhaust system from the inventor's first and sixth cylinder by means of common means cannot be inferred from it. The sense of the same line to exhaust into the open, of the io merging of the exhaust ducts of two cylinder remaining cylinders, two adjacent cylinders in one inside the cylinder head is also cylinder in a known manner within not the same as with the invention, since in this the cylinder head closes According to a common interpretation document, the internal combustion engine has no exhaust gas duct, and that the exhaust gas turbocharger has.

gas turbine connected directly to the cylinder head 15 The invention relates to six-cylinder engine. In-line internal combustion engines. You can analogously

also one-sided on a six-cylinder row one

Twelve-cylinder V-engine or double-sided on its

both six-cylinder rows can be used with an exhaust gas turbo-charger each.

The invention is hereinafter based on the

The invention relates to an exhaust system described for a schematic illustration:
Six-cylinder in-line internal combustion engine with ab- The 6 cylinders are numbered 1 to 6

gas turbo-charging and burst operation of the turbine, lines. The common cylinder head is indicated by 13 for machines with two 25 each. The exhaust gas turbocharger is exhausted through the Ge-cylinder into a common exhaust pipe. housing 10 indicated. The two cylinders no. 1 and 6 It is especially designed for systems with such turbo-puffs in the common line 14 . These loose wires determine which high energy pulsations lead to the device, as indicated by the arrow on the right, turbine entry with good efficiency utilize directly into the open air. There will only be the exhaust of the can. 30 cylinders 2 to 5 are fed to the turbine 10. The exhaust

It is known that in such internal combustion engine lines are combined in pairs for the cylinders 2 and 3, two cylinders in a common exhaust pipe and 4 and 5. To do this, the exhaust gas has to be let out. The exhaust turbocharger was brought so close to the cylinder head, regardless of the exhaust gas turbocharger, that an extremely short, straight-lined, curvature-free exhaust gas routing, if possible taking into account the firing order, is created, combined and relocated as it is on this one Execution shows that about the engine resulted from the arrangement of the cylinders and half the length of the exhaust line as a channel in the turbocharger. However, this does not allow the cylinder head to be attached, in particular the strongly pulsating energy of the exhaust shocks in the pant-pipe-shaped connector, for example exhaust gas turbocharger with the best overall efficiency 40, 14/16, between cylinders 2 and 3 in the. "is essentially in the cylinder head.

The invention has set itself the task of creating the smallest dead spaces with the most direct and exhaust system for such internal combustion engines to create the smoothest flow guidance and accordingly, the best utilization of the energy surges from the cylinder outlet to the impeller. For example, a fluidic unit 45 of the exhaust gas turbine is formed when there is a momentary exhaust flow and therefore the best utilization, in particular cylinder 3, is permitted through the line 14 to the exhaust gas turbine or high energy pulsations. load the dead space volume from cylinder 2 only

She makes herself the z. B. given by the British by the short hatched channel piece 16 . Patent specification $ 30,746 possible. This arrangement is particularly advantageous if not all cylinders can be connected to the turbine ₅₀ when - as mentioned in the example - to be connected. The high yield of the strongly pulsating exhaust valves of the two merging energy of the exhaust shocks, which is achieved in the modern cylinder mirror-image to each other according to your turbocharger according to the shock principle, share a common axis of symmetry,
In the case of the invention, the inlet housing 15 of the exhaust gas turbocharger 10 can be used on the exhaust energy

to dispense with some of the cylinders. 53 is with the elimination of a special exhaust pipe

The invention solves the problem in that it is screwed directly onto the cylinder head 13. The first and sixth two exhaust ducts 14 and 24 of the six-cylinder in-line engine are exhausted into the turbocharger housing into an inlet duct at the cylinder inlet by means of a common line, and two of the remaining cylinders are combined. The volute casing of the exhaust gas turbine is designed with adjacent cylinders in a manner known per se 60 and acts on the impeller within the cylinder head to a common always around the entire circumference, which means that partial exhaust gas ducts are formed and there is no loss of exhaust gas.

turbine is connected directly to the cylinder head. The exhaust system according to the invention has the

US Pat. No. 3,077,071 shows an advantage that the individual lines lead to the exhaust gas system a six-cylinder in-line internal combustion engine 63 the smallest possible dead spaces and the machine with exhaust gas turbocharging, with the smallest possible length and as few as possible two Cylinders in a common exhaust line have curved line routing. It arise puff. The other features of the invention are therefore the lowest flow and thus energy