performance number

performance number

[pər′fȯr·məns ‚nəm·bər]
(engineering)
One of a series of numbers (constituting the PN, or performance-number, scale) used to convert fuel antiknock values in terms of a reference fuel into an index which is an indication of relative engine performance; used mostly to rate aviation gasolines with octane values greater than 100.

performance number

The “knock” rating of an engine. It is expressed as an octane when this figure is below 100. See octane rating.
References in periodicals archive ?
Sometimes when you lose, you focus in on things that you wouldn't necessarily see when you win, and we are looking for a performance number one.
We want dat performance number to be over da 89: Reiterates that ``Rule Breakers'' should have relative strength performance of 90 or greater.
At best, the need for a single performance number is seen as a necessary evil; many argue that performance is multidimensional and can only be accurately represented with a series of performance numbers.
In the 23rd season finale entitled 'Lisa Goes Gaga,' the pop sensation serenaded her fans, known as her 'Little Monsters,' while soaring over them in a harness, a similar stunt she did during her Super Bowl performance number on Monday (Sunday in the US).
Thanks to GIGABYTEs innovative design architecture, excellent performance numbers and supported by comprehensive storage options, these latest models represent some of the most dense compute devices on the market today.
All I have to go by are their historical performance numbers.
For year 2016, the Bank reported highest ever performance numbers in its history, maintaining its leading position amongst the peers.
The brand's chief, Stefano Domenicali, stated that the firm was eyeing electrification technology and is 'flexible to shift in that direction' once the cost and performance numbers are viable.
Seventy-two percent of LPs said they often trust the high-level performance numbers provided by private equity general partners (GPs), yet 75 percent of LPs said they always or often recalculate those manager-provided numbers as part of their due diligence process.
Mullen, a keen racing fan who took up his post in April, nevertheless pledged Ladbrokes' commitment to the sport on a day when he claimed the bookmaker's performance numbers - most VVCONTINUES page 4
A 2015 press release from Suzuki says "Another contributing factor to these improved performance numbers is the 10.

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