1.4L Turbo Engine (Service Information) 500L: Description: Description

Fig 1: 1.4L Turbo Engine (Code EAF)

Courtesy of CHRYSLER GROUP, LLC

MultiAir technology manages the torque and power delivered by the engine by varying the lift profile of the intake valves without direct use of the throttle body. The main features of the MultiAir engine are:

Single camshaft
Standard and hydraulic exhaust tappets
Intake tappets integrated in the MultiAir actuator
Brake servo vacuum pump

Compared to a traditional engine, the special characteristics of the MultiAir system offer better combustion control and a faster response to torque requests, both of which are available and exploitable at each top dead center (TDC). This means:

Reduced fuel consumption
Reduced CO2 emissions
Increased power and torque
Increased driver responsiveness
Less pollution
Easier start-up

Fig 2: Cutaway View Of MultiAir System

Courtesy of CHRYSLER GROUP, LLC

The MultiAir system consists of a hydraulic-mechanical actuator fitted inside the MultiAir engine. MultiAir also includes hardware and software electronic components, built into the powertrain control module (PCM) to manage the engine intake valve motion. At each engine cycle, the MultiAir system controls the quantity of fresh air entering each cylinder by managing intake valve motion.

Fig 3: Dundee Engine Plant Engine Identification Information

Courtesy of CHRYSLER GROUP, LLC

On Dundee Engine Plant (DEP) engine blocks the readable engine identification is located near the flywheel end of the engine on a machined surface along with a QR Code scannable code symbol. The engine identification is structured as follows:

(1) Block Type (four digits):

0001 = Naturally Aspirated
0002 = Turbocharged
0003 = Naturally Aspirated with Cold Weather Package
0004 = Turbocharged with Cold Weather Package

(2) Julian Date (three digits).

(3) Calendar Year (one digit).

(4) Line Designation (one digit). C = Block Line 1.4L FIRE.

(5) Part Sequence for the day (four digits).

Fig 4: Termoli Engine Identification Label

Courtesy of CHRYSLER GROUP, LLC

On Termoli built engine blocks the readable engine identification is on a label affixed to the rear face of the block. The engine identification is structured as follows:

Block Type (two digits):

13 = Naturally Aspirated
14 = Turbocharged

Block cylinder bore class (four alpha characters) A, B or C starting at cylinder 1 reading left to right.

Block main bearing bore class (five digits) 1, 2 or 3 starting from the front reading left to right.

Block main bearing bore punctual class (ten digits) 05 through 18, two digits per main bearing bore. The two digits represent the last two digits of actual measurement of crank bearing class in microns starting from the front reading left to right.

Traceability (five digits) year, day and shift.

4 = Year
064 = Day of the year
3 = Shift

Added traceability (three digits) progressive shift.

Final check (two alpha characters and one digit) OK and a control number.