The Bugatti Type 46 and later Type 50 and Type 50B were touring cars produced by Bugatti from 1929 to 1936.
Type 46
The Type 46 used a 5.4 L (5359 cc/327 in<sup>3</sup>) straight-8 engine with 3 valves per cylinder driven by a single overhead camshaft. Power was reported at 140 hp (104 kW). The engine was undersquare like most Bugatti designs with an 81 mm bore and 130 mm stroke.
The Type 46 was a large car, weighing 2500 lb (1134 kg) and riding on a 138 in (3505 mm) wheelbase. 400 examples were produced from the end of 1929 through 1936. The three speed gearbox was in unit with the live rear axle, resulting in high unsprung weight, and a relatively harsh ride. Despite this, the model was a favourite of Ettore Bugatti.
Type 46S
A supercharged version, the Type 46S, was introduced in 1930. With just 160 hp (119 kW), from its Rootes-type blower, it was not a great success. 18 supercharged cars were made in all.
Type 50
The Type 50 was a sporting coupe version of the Type 46. It rode on a shorter wheelbase, 122 in (3099 mm), and used a smaller 5.0 L (4972 cc/303 in<sup>3</sup>) version of the engine. This engine had squarer dimensions, however, at 86 by 107 mm, and twin camshafts actuated two valves per cylinder. Power output was impressive at 225 hp (167 kW). Many cars had landaulet roofs and Bugatti-style two-tone paint.
===Type 50T===<!-- This section is linked from Bugatti -->
The Type 50 Touring was a sedan version of the Type 50. It used the same 138 in (3505 mm) wheelbase as its predecessor, the Type 46, but shared the 5.0 L engine of the Type 50. The engine was tuned for torque, though, with just 200 hp (149 kW) on tap. In total, 65 Type 50 and Type 50T Bugattis were produced between 1930 and 1934.
Type 50B
A racing version, the Type 50B, was also produced. It shared the 5.0 L 2-valve engine but was blown to produce . It was used from 1937 through 1939. A pair of these engines were installed in the Bugatti P100 airplane, with specially cast magnesium crankcases.
Gallery
<gallery widths="200" heights="150">
File:Paris - Retromobile 2014 - Bugatti type 46 S - 001.jpg|1931 Bugatti Type 46S 4-door saloon Reinbolt & Christé
File:Paris_-_Retromobile_2014_-_Bugatti_type_46_S_-_002.jpg|1931 Bugatti Type 46S 4-door saloon Reinbolt & Christé the "elephant" adiator cap, a sculpture by Rembrandt Bugatti.
File:Paris - Retromobile 2012 - Bugatti type 46 - 1930 - 001.jpg|1930 Bugatti Type 46 two-seater
File:Bugatti_(35788973983).jpg|1930 Bugatti Type 46 two-seater
File:1932 Bugatti Type 50T Coach Profilee.JPG|1932 Bugatti Type 50T
File:Louwman_museum_(417)_(16194004439)_noBG.jpg|1932 Bugatti Type 50T
File:1933 Bugatti Coach Type 46, 140cv 5350cc 140kmh (inv 0914) photo 3.JPG|1933 Bugatti Type 46 "Surprofilée" coach (chassis 46-482)
File:1933 Bugatti Coach Type 46, 140cv 5350cc 140kmh (inv 0914) photo 4.JPG|1933 Bugatti Type 46 "Surprofilée" coach (chassis 46-482)
File:Bugatti Type 46 Profilee (rebodied & styled by Jean Bugatti) (16428236049).jpg|1933 Bugatti Type 46 "Surprofilée" coach (chassis 46-482)
File:Bugatti 46 (1933) pic3.JPG|1933 Bugatti Type 46 berline Million & Guiet (chassis 46-523)
File:Bugatti Berline Type 46S (1934) pic2.JPG|1932 Bugatti Type 46 S berline (chassis 46-560)
File:Bugatti Type 46S (1929-32).jpg|Bugatti type 46 S coach Billeter & Cartier (chassis 46-585)
File:110 ans de l'automobile au Grand Palais - Bugatti Type 46 Faux Cabriolet - 1930 - 007.jpg|1930 Bugatti Type 46 Veth & Zoon "Faux-Cabriolet" coupe (chassis 46-293)
File:110 ans de l'automobile au Grand Palais - Bugatti Type 46 Faux Cabriolet - 1930 - 004.jpg|1930 Bugatti Type 46 Veth & Zoon "Faux-Cabriolet" coupe (chassis 46-293)
File:Bugatti 46 (1930) pic2.JPG|1930 Bugatti Type 46 limousine (chassis 46-188)
File:Bugatti Type 46 at Cité de l'Automobile 101.jpg|1930 Bugatti Type 46 cabriolet Letourneur et Marchand (chassis 46-125)
File:Bugatti Type 46 at Cité de l'Automobile 330.jpg|1934 Bugatti Type 46 berline (chassis 46-574)
File:1934 Bugatti Berline Type 46, 8 cylindres 140cv 5330cc 140kmh (inv 1007) photo 2.JPG|1934 Bugatti Type 46 berline (chassis 46-574)
File:110 ans de l'automobile au Grand Palais - Bugatti Type 46 Cabriolet - 1930 - 011.jpg|1930 Bugatti Type 46 cabriolet Figoni (chassis 46-331)
File:Bugatti_Type_46_at_Cité_de_l'Automobile_104.jpg|1930 Bugatti Type 46 roadster (chassis 46-287)
</gallery>
Technical data
{| class="prettytable"
|----- bgcolor="#DDDDDD"
! width="20%"|
! width="16%"|Type 46
! width="16%"|Type 50
! width="16%"|Type 50B
! width="16%"|Type 50B III
|----- bgcolor="#EEEEEE"
|Engine: || colspan="4" align="center" |Front mounted 8-cylinder in-line engine
|----- bgcolor="#EEEEEE"
|displacement: ||align="center" |5359 cm<sup>3</sup> || align="center" |4972 cm<sup>3</sup> || align="center" |4741 cm<sup>3</sup> || align="center" |2985 cm<sup>3</sup>
|----- bgcolor="#EEEEEE"
|Bore × stroke: || align="center" |81 × 130 mm || align="center" |86 × 107 mm || align="center" |84 × 107 mm || align="center" |78 × 78 mm
|----- bgcolor="#EEEEEE"
|Max power at rpm: || align="center" |140 hp at 3 500 rpm || align="center" |225 hp at 4 000 rpm || align="center" |402 hp at 5 300 rpm || align="center" |275 hp at 4 500 rpm
|----- bgcolor="#EEEEEE"
|Valve control: || align="center" |1 overhead cam shaft, 3 valves per cylinder, SOHC|| colspan="3" align="center" |2 overhead camshafts, 2 valves per cylinder, DOHC
|----- bgcolor="#EEEEEE"
|Compression: || align="center" | || align="center" | 7.5:1|| colspan="2" align="center" |
|----- bgcolor="#EEEEEE"
|Carburetor: || align="center" |Smith-Bariquand || colspan="2" align="center" | 2 Zenith || align="center" |
|----- bgcolor="#EEEEEE"
|Upload: || align="center" | Naturally Aspirated || colspan="4" align="center" |Roots compressor
|----- bgcolor="#EEEEEE"
|Gearbox: || colspan="5" align="center" |4-speed manual
|----- bgcolor="#EEEEEE"
|suspension front: || colspan="2" align="center" |Rigid axle, semi-elliptic leaf springs || colspan="2" align="center" |Solid axle, semi-elliptic leaf springs
|----- bgcolor="#EEEEEE"
|suspension rear: || align="center" |Live axle, quarter-elliptic leaf springs|| colspan="3" align="center" |Live axle, reversed quarter-elliptic leaf springs
|----- bgcolor="#EEEEEE"
|Brakes: || colspan="5" align="center" |drums, all-round
|----- bgcolor="#EEEEEE"
|Chassis & body: || colspan="2" align="center" |Cast-iron block and head || colspan="2" align="center" |steel ladder frame
|----- bgcolor="#EEEEEE"
|Wheelbase: || colspan="2" align="center" |310 cm || colspan="2" align="center" |260 cm
|----- bgcolor="#EEEEEE"
|Dry weight: || colspan="4" align="center" |
|----- bgcolor="#EEEEEE"
|Top speed: || align="center"| || align="center"|170 km/h || colspan="2 align="center"|
|----- bgcolor="#EEEEEE"
|}