low temperature activity

A description of the ability of a catalytic converter to purify exhaust gases in the warm-up phase following a cold start. This phase is included in most of the current exhaust emission test procedures, as CO and HC concentrations are particularly high when engines are operated below normal operating temperatures

Dictionary of automotive terms. 2015.

Look at other dictionaries:

  • temperature activity — See low temperature activity …   Dictionary of automotive terms

  • temperature — [1] degree of hotness or coldness as measured by a thermometer. [2] Measurement of speed of motion of molecules. [3] The measure of heat intensity or concentration, expressed in degrees. Measured by a thermometer. Temperature is not a measure of… …   Dictionary of automotive terms

  • activity — See catalytic activity low temperature activity specific activity …   Dictionary of automotive terms

  • Temperature-responsive polymer — A temperature responsive polymer is a polymer which undergoes a physical change when external thermal stimuli are presented. The ability to undergo such changes under easily controlled conditions makes this class of polymers fall into the… …   Wikipedia

  • Low — 1. adj., n., & adv. adj. 1 of less than average height; not high or tall or reaching far up (a low wall). 2 a situated close to ground or sea level etc.; not elevated in position (low altitude). b (of the sun) near the horizon. c (of latitude)… …   Useful english dictionary

  • Low-power electronics — means that the consumption of electric power is deliberately low, e.g. notebook processors. Electronics The density and speed of integrated circuit computing elements has increased roughly exponentially for a period of several decades, following… …   Wikipedia

  • Low-carbohydrate diet — Low carbohydrate diets or low carb diets are dietary programs that restrict carbohydrate consumption usually for weight control or for the treatment of obesity. Foods high in digestible carbohydrates (e.g. bread, pasta) are limited or replaced… …   Wikipedia

  • Activity (chemistry) — In chemical thermodynamics, activity (symbol a) is a measure of the “effective concentration” of a species in a mixture, meaning that the species chemical potential depends on the activity of a real solution in the same way that it would depend… …   Wikipedia

  • Low-pressure area — This depiction of the Hadley cell shows the process which sustains low pressure areas. Diverging winds aloft allow for lower pressure and convergence at the Earth s surface, which leads to upward motion. A low pressure area, or low , is a region… …   Wikipedia

  • Low-affinity nerve growth factor receptor — P75 redirects here. For the New Testament manuscript, see Papyrus 75. For Pentium processor at 75 MHz, see Intel P5 (microarchitecture). Nerve growth factor receptor PDB rendering based on 1sg1 …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”

We are using cookies for the best presentation of our site. Continuing to use this site, you agree with this.