The Roots blower is a positive displacement lobe pump which operates by pumping a fluid with a pair of meshing lobes resembling a set of stretched gears...

inventors Philander Higley Roots and Francis Marion Roots. It is notable for the Roots blower, a type of pump. Today, Roots blowers are mainly used as air...

is usually based on their capacity per revolution. In the case of the Roots blower, the GMC rating pattern is typical. The GMC rating is based on how many...

block with 567 series power assemblies. All 645 engines utilize either a Roots blower or a turbocharger for cylinder scavenging. For turbocharged engines,...

All Series 71 engines use uniflow scavenging, in which a gear-driven Roots blower mounted to the exterior of the engine provides intake air through cored...

than touch and turn each other. An early example of a lobe pump is the Roots Blower, patented in 1860 to blow combustion air to melt iron in blast furnaces...

was 33 percent higher than the 1,800 hp (1,340 kW) of the concurrent Roots blower-equipped SD18s with the same engine displacement, 400 hp (298 kW) per...

External vane pump Roots blower, also called a booster pump, has highest pumping speeds but low compression ratio Multistage Roots pump that combine several...

combustion air; the Series 53 engines are fitted with a gear-driven Roots blower mounted to the exterior of the engine, which is inherently necessary...

EMD's former owner). All 567 engines use forced induction, with either a Roots blower or a turbocharger. The turbocharger (a combination turbo-compressor system)...

accomplished by Roots blowers, for charge air induction at slightly above ambient, or EMD's proprietary turbo-compressor, which acts as a blower during start-up...

compression-ignition with uniflow-ported cylinders. Scavenging was performed by a Roots blower, which was mounted on the front of the engine and driven by a long quill...

by Connersville some time in the 1920s. The Roots blower, a type of air turbine, was invented by the Roots brothers in Connersville in the 1850s, patented...

diesel engines use a scavenge blower or some form of compressor to charge the cylinders with air and assist in scavenging. Roots-type superchargers were used...

was 33 percent higher than the 1,800 hp (1,340 kW) of the concurrent Roots blower-equipped SD18s with the same engine displacement. The SD24 has 400 hp...

EMD 16-567B RPM range 800 Engine type Two-stroke V16 diesel Aspiration Roots blower Displacement 9,072 cu in (148.66 L) Generator EMD D-12 Traction motors...

equivalent to the "pips" worn by the army and police. Air pumps, such as the roots blower, use meshing impellers to move air through a system. Applications include...

over Roots-blown engines for the same engine displacement. But, unlike the earlier 645 and 567, which could use either turbochargers or Roots blowers, the...

1974 and 1980. It was equipped with a V12 12-645E engine sporting a Roots blower. The length was either 47 ft 8 in (14.53 m) or 48 ft 8 in (14.83 m) depending...

diesel for evacuating the cylinders of exhaust gases, was performed by a Roots blower. The Chieftain's L60 engine and cooling system were designed into an...

Wolfgang Gaede in 1913, Fernand Holweck in 1923 and Manne Siegbahn in 1944. Roots blower John F. O'Hanlon (4 March 2005). A User's Guide to Vacuum Technology...

48-short-ton (44 t) Roots blower, nicknamed "the Western Tornado", built by Roots Patent Force Rotary Blowers (see Roots Blower Company). When the car...

16-567C RPM range 835 max Engine type V16 Two-stroke diesel Aspiration Roots blower Displacement 9,072 cu in (148.66 L) Generator EMD D-12-B Traction motors...

FM 38D-8 1/8 Engine type Two stroke, opposed piston diesel Aspiration Roots blower Displacement 8,295 cu in (135.93 L) Generator Westinghouse 472 BZ Traction...

diesel engine of 12.17 litres (743 cu in). Most were supercharged by a Roots blower, but there were also variants with a turbocharger or naturally aspirated...

process in gasoline and hot-bulb engines. Diesel two-strokes often add a Roots blower or piston pump for scavenging. The reed valve is a simple but highly...

around 200 bhp (150 kW) at 7000 rpm. with the help of a single-stage Roots blower. More success came at the Coppa Acerbo, Coppa Ciano and Tripoli Grand...

This arrangement helps to balance the radial force on the bearings. Roots blower Hoffman, Russell D. (February 2002). "All About Pumps — Volute Pumps"...

than minimal, they operated at essentially a constant speed. Since a Roots blower is a positive-displacement device, this meant that the mass flow rate...

post-war Commer TS3 was similar but the Sulzer had a piston-type blower instead of a Roots blower. It was made in two sizes: 69 mm bore x 101.6 mm stroke or...