Sentences with phrase «stratified fuel charge»
The piston crowns are dished to help maintain stable combustion and to optimize distribution of the stratified fuel charge from the direct injector in each cylinder.
http://www.greencarcongress.com/ Not exact matches
But Bryen says that the same sensor technology, and the algorithms controlling fuel - air mixtures, can also improve the efficiency of fuel - injection engines, including the latest Japanese designs with multiple valves and stratified charge combustion.
Mainly thanks to direct fuel injection with stratified charge (it sounds better if you say iniezione diretta stratificata), and the 12.5:1 compression ratio it allows because squirting the fuel directly into the cylinder has the effect of cooling the air that has been heated by compression.
«We know that a central injection system is a prerequisite for future global fuel economy upgrades such as stratified lean operation, homogeneous charge compression ignition or HCCI, and premium injection system technology if the market demands,» said Martin Wirth, a Ford Direct Injection Gasoline Systems and Combustion technical specialist.
The stratified charge puts a mixture that's richer near the spark plug for easy ignition, while other areas on the combustion chamber have a leaner fuel / air ratio.
As conventional catalytic converters require a stoichiometric fuel - air mixture (lambda = 1), but stratified charge operation uses high excess air (lambda > 1), the CLS 350 CGI is equipped with two NOx storage - type catalytic converters.