Audi Type M

Audi Type M

The Audi 18/70 hp Type M was a luxury class cars with six-cylinder engine of the Audi Werke AG Zwickau. The first Audi with mechanical- hydraulic four-wheel brake was shown in the autumn of 1923 at the Berlin Motor Show as the successor of the four- cylinder type K.

General

From 1925 to 1928 originated in Zwickau except two prototypes Audi 228 type M. Today, there are three cars and a truck. Successor was the 1927 Audi Type R made ​​with eight-cylinder engine.

Some innovations made ​​the Audi 18/70 hp Type M catch the eye of the exhibition: The engine block made ​​of an aluminum alloy was designed with a smooth surface; the overhead camshaft was driven by a vertical shaft; the first time the intake air was filtered; one housed in the transmission compressor facilitated the inflation of the tires.

The vehicle had a front mounted six -cylinder engine with 4.7 liters of displacement, the (51 kW) developed 70 hp at 2500 min-1. The engine had an eight -bearing crankshaft, forced lubrication with oil cooler and a thermostatically controlled water cooling. Over a four-speed transmission with shift lever in the center of the car he drove to the rear wheels. The car had front and rear leaf- sprung rigid axle. With a price of 22,300 Reichsmarks was the four-door Pullman limousine is one of the most expensive cars in the German Empire and brought Audi the bankruptcy very close.

Specifications

• PL4 = 4-door Pullman limousine

Source

• Oswald, Werner: German cars 1920-1945, Motorbuchverlag Stuttgart, 10th edition (1996 ), ISBN 3879435197