| 词条 | Cadillac V16 engine |
| 释义 |
The Cadillac V16 engine was a type of automobile engine produced in the 1930s. Cadillac produced two of only three production, gasoline-fueled V16 engine models in history. Both were used in the Cadillac V-16 automobile, the first from 1930 until 1937, and the second between 1938 and 1940. The company has twice attempted to build a new V16 engine, once in the 1980s and again in 2003, but these have yet to be put into production. The only other 16-cylinder automotive engines ever attempted were Bugatti's 1915 U16, Marmon's V16, the BMW Goldfisch V16 and Cizeta-Moroder's V16 (actually 2xV8). BRM fielded a V-16 in supercharged 1.5 liter form in 1954, which was powerful but unreliable. In addition, BRM developed an "H-16" engine (flat 8s stacked one atop another driving a third crank to the transmission) for the 1966 3 liter Formula One season. It was heavy and did not produce the expected amount of power. It was used by Lotus in the Model 43, and by BRM in its own F1 car. BRM abandoned the engine in 1967, replacing it with a V-12. A modern, quad-turbocharged W16 engine was used in the EB 16/4 Veyron built by the new Volkswagen-owned Bugatti in the 2000s. Series 452{{Infobox automobile engine| name =Cadillac Series 452 | image = | manufacturer =Cadillac | aka = | production ={{Start date|1930}}-{{End date|1937}} | predecessor = | successor =Cadillac Series 90 | configuration =45° V-16 with 5-bearing crankshaft[1] | displacement ={{Convert|452|cuin|cc|abbr=on}}[1] | bore ={{Convert|3|in|mm|abbr=on}}[1] | stroke ={{Convert|4|in|mm|abbr=on}}[1] | block = | head = | valvetrain =OHV[1] | compression =5.3:1[1] | supercharger = | turbocharger = | fuelsystem =2 single barrel carburetors[1] | management = | fueltype =gasoline | oilsystem =wet sump[1] | coolingsystem =water cooled[1] | power ={{convert|165|hp|kW|abbr=on}} between 3200 and 3400 rpm (1930)[1] | specpower =22.3 bhp/liter[1] | torque = | length = | width = | height = | diameter = | weight = }} With its chief competitor, Packard, already having sold a V12 engine against Cadillac's eight-cylinder cars, work began late in the 1920s under Hemmings to produce a car of real impact. Lawrence Fisher, Cadillac General Manager, leaked to the press that the company would also build a V12, hoping to keep the real engine secret.[2] The original Cadillac V16 could be said to be two straight-8 engines on a common crankshaft and crankcase, because each bank operated entirely independently of the other with no other shared components. It sported a narrow 45° bank angle for use in the new Cadillac chassis (which became the Fleetwood).[3] The engine was well engineered, with a counterweighted crankshaft (quite a mathematical challenge at the time), overhead valves,[4] and hydraulic tappets.[4] It also had only two single barrel carburetors,[5][4] one for each bank.[5] The 452 V16 had a {{convert|3|in|mm|abbr=on}} bore and a {{convert|4|in|mm|abbr=on}} stroke, giving an engine displacement of {{convert|452|CID|L|1|lk=in}}. It was therefore known as the Series 452. Cadillac initially rated the engine at {{convert|165|bhp|kW|abbr=on}}.[5] It was capable of powering the heavier models to speeds in excess of {{convert|80|mph|km/h|abbr=on}}, and {{convert|100|mph|km/h|abbr=on}} for some of the lighter examples. In all, 3878 Series 452s were built.[4] This engine was used in the various V-16 models:
Series 90The second generation of V16 used an unusually wide vee-angle of 135°, giving a wide but much lower engine to suit the styling tastes of the late 1930s. The two carburetors, one on each bank, and air cleaners were mounted on top of the engine block in this design. These engines had 'square' proportions; bore and stroke were both {{convert|3+1/4|in|mm|sigfig=3|abbr=on}}, giving an overall displacement of {{convert|431|CID|L|1}}. Cadillac rated these engines at the same 185 bhp (138 kW) as the previous series. These engines were known as the Series 90, as were the cars that used them. The Series 90 V16 was produced from 1938 through 1940. This engine was used in the 1938-1940 Series 90. The 431-cubic-inch displacement 1938-40 Cadillac V16 was one of the last new American auto engine designs prior to World War Two. As such, it incorporated some of the latest thinking. Nine main bearings provided a crankshaft main bearing support between each 135 degree opposing pair of cylinders. The square bore and stroke lowered piston speed and promoted crankshaft rigidity, no small matter for an engine with eight cylinders in line per cylinder bank. The side valve engine design was no handicap for the time because the era's typical top engine speed of 3400-3700 rpm provided little opportunity to exploit the high speed breathing efficiency of overhead valves. Luxury car drivers presumably valued smoothness and silence more than high speed power. Hydraulic valve lifters promoted silent running and an absence of periodic adjustment. Unlike most cars of the era, an external oil filter safeguarded the precision valve lifters. Despite the use of side valves, the engine produced as much power as the prior 45 degree V16, and with much less complexity. The earliest engines produced featured an innovative friction wheel drive to the generator. This was soon replaced by a conventional V belt drive. Cadillac claimed that the 1938, 1939, and 1940 Series 90 Sixteen had the best performance of any production car in the world at the time and would accelerate 10-60 in high gear only in 16 seconds. The definitive engineering report on the 135 degree Cadillac V16 engine is "The Evolution of the Cadillac Sixteen engine," by E.W. Seaholm, in charge of Cadillac engine design. It was published by the industry journal "Automotive Industries," November 27, 1937. V12Cadillac also built a V12 engine based on the Series 452 engine for 1930 through 1937. It retained the 45° vee-angle and displaced {{convert|368|CID|cc|abbr=on}} from a {{convert|3.125|in|mm|abbr=on}} bore and {{convert|4|in|mm|abbr=on}} stroke. Output was rated at {{convert|135|hp|kW|abbr=on}} with two carburetors. The cars were designed to make a statement, so all engine wiring and plumbing was hidden from view. The V12 was used in the Fleetwood-bodied V-12 models:
Later developmentsThe Cadillac Sixteen concept utilized an all-aluminium pushrod V16 engine based on the same architecture as GM's then-current small-block V8 developments.[6][7] A production version with a base V8 and the option of the V12 engine was planned, but was never approved for production and was ultimately shelved around 2008.[8] References1. ^{{cite book|title=Car — The definitive visual history of the automobile|year=2011|p=45|publisher=Dorling Kindersley|isbn=978-0-7566-7167-9}} 2. ^{{cite journal|journal=Hemmings Classic Car|page=17|issue=December 2006|title=In the Halls of Power}} 3. ^Editors of Automobile Quarterly. General Motors: The First 75 Years. (New York: Crown Publishers, Inc, 1983), p.58. 4. ^1 2 3 General Motors: The First 75 Years, p.58. 5. ^1 2 3 4 5 6 7 8 9 10 11 12 {{cite book| last = Rogliatti| first = Gianni| editor = Cyril Posthumus| editor-link = Cyril Posthumus| title = Period Cars| year = 1973| publisher = Hamlyn| location = Feltham, Middlesex, UK| isbn = 0-600-33401-5| pages = 234–235}} 6. ^{{cite web|url=http://autospeed.com/cms/title_When-You-Want-16-Cylinders/A_1783/article.html |title=When You Want 16 Cylinders |publisher=AutoSpeed |date= |accessdate=2011-10-27}} 7. ^{{cite web|url=http://www.caranddriver.com/features/03q2/cadillac_sixteen_concept_v-16_engine-tech_stuff/real-world_results_page_3 |title=Cadillac Sixteen Concept V-16 Engine |publisher= |date= |accessdate=2012-06-04}} 8. ^{{cite web|url=http://www.insideline.com/cadillac/sts/2009/il-insider-cadillac-shelves-the-twelve.html |title=IL Insider: Cadillac Shelves the Twelve |publisher=Insideline.com |date=2008-08-21 |accessdate=2011-10-27}} External links
{{DEFAULTSORT:Cadillac V16 Engine}} 1 : Cadillac engines |
| 随便看 |
|
开放百科全书收录14589846条英语、德语、日语等多语种百科知识，基本涵盖了大多数领域的百科知识，是一部内容自由、开放的电子版国际百科全书。