Det där låter som en riktig story från DDR-Sverige

Man skulle alltså inte bara dra bort all friktion i motorn, man skulle därtill addera den såsom effekt? Jag har inte ngnstans kunnat läsa om att ngt sådant skulle ha förekommit i SAE-normen. Låter otroligt.
Jag tror att man då på 70-talet (som jag skrev ovan) kanske mätte med vattenpump och fläkt enl DIN men utan i SAE eller ngt liknande. Det skulle jag kunna tänka mig.
Nuförtiden verkar dock som sagt SAE skatta effekten lägre en DIN.
Men även så anger man motoreffekten.
Vad man sedan använder effekten till är upp till var och en.
Ännu enklare vore att mäta bränsleförbrukningen vid full belastning.
Då vet man ju hur mycket energi man kan stoppa in = Få ut...
Påminner om topphastighetsangivelserna i slutet på sjuttiotalet.
Italienarna angav maxhastigheten.
DVS, den maximala hastigheten som motorcykeln teoretiskt kunde uppnå (maxvarv på högsta växeln).
BMW kunde garantera att varje cykel kunde köras i minst det uppgivna hastigheten.
Antagligen så är den historia jag hört (för länge sedan) en förvanskning/missuppfattning av din version.
Historia är det dock.
Kollade på "Wikipedia" Där står det om "Indicated horsepower".
Nytt för mig.
Nästan som min bränsleförbrukningsformel.
Klippochklistradags:
SAE gross crankshaft horsepower
Prior to the 1972 model year, American automakers rated and advertised their engines in brake horsepower (bhp), frequently referred to as SAE gross horsepower, because it was measured in accord with the protocols defined in SAE standards J245 and J1995. As with other brake horsepower test protocols, SAE gross hp was measured using a stock test engine, generally running with few belt-driven accessories and sometimes fitted with long tube (test headers) in lieu of the OEM exhaust manifolds. The atmospheric correction standards for barometric pressure, humidity and temperature for testing were relatively idealistic.
[edit] SAE net crankshaft horsepower
In the United States, the term bhp fell into disuse in 1971-72, as automakers began to quote power in terms of SAE net horsepower in accord with SAE standard J1349. Like SAE gross and other brake horsepower protocols, SAE Net hp is measured at the engine's crankshaft, and so does not account for transmission losses. However, the SAE net hp testing protocol calls for standard production-type belt-driven accessories, air cleaner, emission controls, exhaust system, and other power-consuming accessories. This produces ratings in closer alignment with the power produced by the engine as it is actually configured and sold.
[edit] SAE certified crankshaft horsepower
In 2005, the SAE introduced a new test protocol for engine horsepower and torque.[12] The new protocol eliminates some of the flexibility in power measurement, and requires an independent observer present when engines are measured. The test is voluntary, but engines completing it can be advertised as SAE-certified.
A few manufacturers such as Honda and Toyota switched to the new ratings immediately, with multi-directional results; the rated output of Cadillac's supercharged Northstar V8 jumped from 440 hp (330 kW) to 469 hp (350 kW) under the new tests, while the rating for Toyota's Camry 3.0 L 1MZ-FE V6 fell from 210 hp (160 kW) to 190 horsepower (140 kW). The ES330 and Camry SE V6 were previously rated at 225 hp but the ES330 dropped to 218 hp while the Camry declined to 210 hp. The first engine certified under the new program was the 7.0 L LS7 used in the 2006 Chevrolet Corvette Z06. Certified power rose slightly from 500 hp (370 kW) to 505 hp (377 kW).
[edit] DIN horsepower
DIN horsepower is the power measurement protocol in the German DIN standard 70020. It is sometimes abbreviated as PS, which stands for Pferdestärke, which is the German word for horsepower. DIN hp is measured at the engine's output shaft, and is usually expressed in metric (Pferdestärke) rather than mechanical horsepower.