Ma vaatasin mootorite andmeid enne 70'ndate algust, seal olid kilovatit päris kõrged. nt: 7,7l mootor annab välja 250 kw ja 712 nm. Miks need nii tohutult pärast 70'ndate algust kukuvad nii 130-140 kw juurde. Mille jaoks pidi Cadillac nii palju võimsust maha kruttima.
Lihtsalt huviline
Cadillacide mootorid
esiteks mindi gross hobujõult üle net hobujõu möötmise meetodile (net on ca 3/4 grossi, kirvemeetodil)
ja teiseks hakkas 70ndate alguses pihta naftakriis - siis tõmmati kõikidel mootoritel bensukulu vähendamiseks hobuseid maha. Seda on suht lihtne teha - teine sisselase, mõned detailid veel ja korras.
ja teiseks hakkas 70ndate alguses pihta naftakriis - siis tõmmati kõikidel mootoritel bensukulu vähendamiseks hobuseid maha. Seda on suht lihtne teha - teine sisselase, mõned detailid veel ja korras.
„siin on tegemist jällegi ühe toreda riigireetmisega“ (Bretschneider).
75% 375st = 281
Hp (SAE)
In the United States the term "bhp" fell into disuse after the American Society of Automotive Engineers (SAE) recommended manufacturers use hp (SAE) to indicate the net power of the engine, given that particular car's complete engine installation. It measures engine power at the flywheel, not counting drivetrain losses.
Starting in 1971 automakers began to quote power in terms of SAE net horsepower (as defined by standard J1349). This reflected the rated power of the engine in as-installed trim, with all accessories and standard intake and exhaust systems. By 1972 U.S. carmakers quoted power exclusively in SAE net hp. The change was meant to 'deflate' power ratings to assuage the auto insurance industry and environmental and safety lobbies, as well as to obfuscate the power losses caused by emissions-control equipment.
SAE net ratings, while more accurate than gross ratings, still represent the engine's power at the flywheel. Contrary to some reports, it does not measure power at the drive wheels.
Because SAE gross ratings were applied liberally, at best, there is no precise conversion from gross to net. Comparison of gross and net ratings for unchanged engines show a variance of anywhere from 40 to 150 horsepower. The Chrysler 426 Hemi, for example, in 1971 carried a 425 hp gross rating (often considered to be underrated) and a net rating of 375 hp.
Hp (SAE)
In the United States the term "bhp" fell into disuse after the American Society of Automotive Engineers (SAE) recommended manufacturers use hp (SAE) to indicate the net power of the engine, given that particular car's complete engine installation. It measures engine power at the flywheel, not counting drivetrain losses.
Starting in 1971 automakers began to quote power in terms of SAE net horsepower (as defined by standard J1349). This reflected the rated power of the engine in as-installed trim, with all accessories and standard intake and exhaust systems. By 1972 U.S. carmakers quoted power exclusively in SAE net hp. The change was meant to 'deflate' power ratings to assuage the auto insurance industry and environmental and safety lobbies, as well as to obfuscate the power losses caused by emissions-control equipment.
SAE net ratings, while more accurate than gross ratings, still represent the engine's power at the flywheel. Contrary to some reports, it does not measure power at the drive wheels.
Because SAE gross ratings were applied liberally, at best, there is no precise conversion from gross to net. Comparison of gross and net ratings for unchanged engines show a variance of anywhere from 40 to 150 horsepower. The Chrysler 426 Hemi, for example, in 1971 carried a 425 hp gross rating (often considered to be underrated) and a net rating of 375 hp.
„siin on tegemist jällegi ühe toreda riigireetmisega“ (Bretschneider).
Ja kuhugi sinna esimese ja teise vahele: rohelised hakkasid pinda käima. Tekkisid tolle aja kohta suhteliselt ranged saastenormid ning üldiselt võeti suund pliivaba bensiini kasutamisele. Mis tähendas ca 1971. aasta paiku surveastmete katastroofilist kahanemist (11 asemele tuli 8 umbes). Aga kust see võimsus ikka siiani tulnud oli kui töömahu ja surveastme kooskasvatamisest...ain wrote:...ja teiseks hakkas 70ndate alguses pihta naftakriis - siis tõmmati kõikidel mootoritel bensukulu vähendamiseks hobuseid maha. Seda on suht lihtne teha - teine sisselase, mõned detailid veel ja korras.
Energiakriis ei andnud tunda enne 1973. aasta sügist.
1956 Series 62 coupé