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IC powertrains

IC powertrains OVERVIEW AND CHALLENGES In addition to electrification, achieving the ambitious CO 2 emission reduction targets for the transport and off-road sector by 2030 requires a significant improvement in IC engines using environmentally-friendly fuels or renewable hydrogen, in such a way as to: make clean, efficient technologies accessible to
Science@ifpen n°32
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Pollutant emissions: better knowing them to fight them better

Vehicle approval certifies that the emissions of said vehicle meet the specifications imposed by existing standards. Although current regulations only concern a limited number of chemical species, the
Science@ifpen n°32
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Ignition simulation

In order to reduce fuel consumption in gasoline engines, manufacturers are focusing their efforts on turbocharging and downsizing. However, this option leads to an increase in the knock phenomenon
Science@ifpen n°32
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Life and death of soot: a model to control the phenomenon

Vehicle approval standards require increasingly high levels of engine performance (low fuel consumption and low emissions) over a broad working range. It is for this reason that new engine
Science@ifpen n°32
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Where aviation fuels are concerned... compromise is the name of the game

In the aviation sector, fuels derived from hydrotreated vegetable oils (HEFA a) are seen as an alternative to petroleum based Jet A-1 b to reduce the environmental footprint of air transport. However
Science@ifpen n°32
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LES moves to rapid transients for cleaner powertrains

Gasoline direct injection engines emit soot particles during rapid transients. This still poorly understood phenomenon is taken into account during new WLTCs a, aimed at more accurately reproducing
Science@ifpen n°32
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Observation of soot in a diesel flame

The reduction in IC engine particle emissions requires a detailed knowledge of the physicochemical processes at work during combustion. While fuels have long since been considered as a constant for
Issue 31 Science@ifpen
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Journey to the center of a droplet

THÈSE DE CHARLOTTE GALLOIS
Issue 31 Science@ifpen
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How wet is a flow?

THÈSE DE ZLATKO SOLOMENKO, PRIX YVES CHAUVIN 2017
Numéro 30 Science@ifpen
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Exhaust gas heat: optimal recovery through supervision and control

Recovering heat from exhaust gases using the Rankine thermodynamic cycle a is one of the avenues being explored to reduce the energy consumption of IC engines. Tried and tested for stationary