Page 54: of Maritime Reporter Magazine (February 1998)

100 Years Ago

MAN B&W Celebrates 100th Anniversary Of Diesel Engine License Agreement

Late last month — January 28, 1998 to be exact — marked the 100th anniversary of B&W acquir- ing the rights to use the patent granted to German engineer

Rudolf Diesel for his invention.

In 1892, Mr. Diesel patented the engine which would later be named after him — the diesel engine.

The diesel engine was run for the first time on February 17, 1894 at Maschinenfabrik Augsburg.

That same year, Mr. Diesel tried to interest B&W in his engine, sending a letter to David Halley,

B&W managing director. Enclosed with the letter was his book,

Theorie und Konstruktion eines rationellen Warmemotors, which described a 30 to 40 percent fuel utilization as opposed to the 15 percent obtained with contempo- rary steam engines.

Mr. Halley's response: Using oil as fuel was unusual and it was very difficult getting the oil to its destination at a reasonable cost.

In brief, B&W was not immediate- ly interested.

Enter Danish engineer C.

Winsl0w, who visited

Maschinenfabrik Augsburg in

October 1897, where he met

Rudolf Diesel. There, Mr.

Winsl0w — who worked for the

Danish company A/S Titan — attended a trial run of the test

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Circle 235 on Reader Service Card engine. Titan was interested in pro- ducing small diesel engines and had sent Winsl0w to Augsburg to study the engine.

As Titan was only interested in small-engine pro- duction, Mr. Diesel gave them until November 30, 1897 to find a manufacturer who would be inter- ested in large engines, and he set up a draft agreement.

Before the November deadline,

Titan got together with B&W, and the contract was split in two, giv- ing B&W and Titan joint rights to produce engines of up to 20 hp for

DEM 40,000 and DEM 20,000.

However, B&W and Titan were unable to come to an agreement, and in December 1897, Martin

Dessau, B&W's managing direc- tor, went to Berlin where the con- tract was set up and signed by

Diesel and later by B&W on

January 28, 1898. The first engine was delivered in 1904 to N.

Larsens Vognfabrik in

Copenhagen to produce electricity for lighting. The engine type was

DM140, i.e. one cylinder with an output of 40 hp at 180 rpm. The cylinder diameter was 320 mm and the stroke 490 mm.

The demand for marine diesel engines grew rapidly, and around 1909, B&W engineers developed a reversing mechanism enabling the engines to run in both directions.

In 1910, diesel engines were being built for the world's first ocean- going motorship, M/S Selandia.

With Selandia's maiden voyage to

Bangkok in 1912, the B&W engine became recognized as an innova- tive addition to the shipping indus- try. In the following years, the diesel engine was further

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Above is a photo of the original B&W/Diesel con- tratct.

Maritime Reporter/Engineering News