Lotus Esprit - Vehicle Emission Control; Crankcase Vapour Control; Evaporation Control System; Anti Run-on System

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VEHICLE EMISSION CONTROL
Controlling Vehicle Emissions
The various sytems to control emissions ar.e as follows:-
Crankcase Vapour Control
Any crankcase vapour is fed to the engine air intake, and burned during combustion.
I
AJR CLEANER
l==}> AIR
~AIR/OIL
~OIL
CRANKCASE VAPOUt CONTROL
Evaporation Control
The Evaporation Control System
prevents gasoline vapours from
escaping to atmosphere from the
fuel tank and carburetters, by
routing the vapours through a
charcoal canister when the engine
is not running. When the engine
is running, air is drawn through
the canister, purging the gasoline
vapours from the charcoal. The air
and vapour mixture is then routed
to the engine, and burned during
engine combustion.
A
B
c
Fuel Tanks
Evaporative Loss Tank
Carburettors
Anti Run-on System
D - Charcoal Canister
E Anti·run on Valve
F - Unleadened Fuel Restrictors
The antt Run-on valve, which is linked to the oil pressure switch, ensures that the
engine stops when the ignition is turned off, and vents any evaporative emissions
from
the carburetter float chambers.