2006 INFINITI M35 Factory Service Manual

technical specifications door lock lane assist windshield wipers rear view mirror start stop button

Load previous 8 pages

Page 465 of 5621

INFINITI M35 2006 Factory Service Manual ATC-18
PREPARATION
Revision: 2006 January2006 M35/M45
(J-43926)
Refrigerant dye leak detection kit
Kit includes:
(J-42220)
UV lamp and UV safety goggles
(J-41459)
HFC-134a (R-134a) dye injector
Use wi

Page 466 of 5621

INFINITI M35 2006 Factory Service Manual PREPARATION
ATC-19
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Commercial Service ToolsNJS000FY
Service hoses
High-pressure side hose
(J-39501-72)
Low-pressure side hose
(J-39502-72

Page 467 of 5621

INFINITI M35 2006 Factory Service Manual ATC-20
REFRIGERATION SYSTEM
Revision: 2006 January2006 M35/M45
REFRIGERATION SYSTEMPFP:KA990
Refrigerant CycleNJS000FZ
REFRIGERANT FLOW
The refrigerant flows from the compressor, through the condenser

Page 468 of 5621

INFINITI M35 2006 Factory Service Manual REFRIGERATION SYSTEM
ATC-21
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Variable Displacement CompressorNJS000G1
GENERAL INFORMATION
1. The variable compressor provides refrigerant

Page 469 of 5621

INFINITI M35 2006 Factory Service Manual ATC-22
REFRIGERATION SYSTEM
Revision: 2006 January2006 M35/M45
DESCRIPTION
General
The variable compressor is a swash plate type that changes piston stroke in response to the required cooling
capacity

Page 470 of 5621

INFINITI M35 2006 Factory Service Manual REFRIGERATION SYSTEM
ATC-23
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Operation
1. Control Valve
–By changing high-pressure valve lift amount, built-in electronic control valve

REFRIGERATION SYSTEM
ATC-23
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Operation
1. Control Valve
–By changing high-pressure valve lift amount, built-in electronic control valve executes the following:
• Controls high-pressure valve discharge amount.
• Changes crankcase pressure in compressor.
• Changes angle of swash plate.
–Amount of high-pressure valve lift is determined by factors below.
• Low-pressure applied to diaphragm
• Spring load of set spring
• Balance of magnetic force generated in magnet coil
–Electronic control valve (ECV) magnet coil receives electric signal (duty control) from unified meter and A/
C amp. Then, magnetic force generated by electric current is changed to control high-pressure valve lift
amount.
2. Maximum Cooling
High-pressure valve is closed by magnetic force generated by electric signal sent from unified meter and
A/C amp. At this time, cylinder moves full stroke due to pressure balance between inside crankcase (Pc)
and suction line (Ps).
Under this condition, the swash plate is set to the maximum stroke position.
3. Capacity Control
When no electric signal is sent from unified meter and A/C amp. (current: OFF), high-pressure valve is
opened by spring force.
Since suction pressure is low, it makes the suction port close and the discharge port open. Thus, crank-
case pressure becomes high as high-pressure enters the crankcase.
–The force acts around the link near the swash plate, and is generated by the pressure difference before
and behind the piston.
–The thrust flange and link are located where the piston generates the highest pressure. Piston pressure is
between suction pressure Ps and discharge pressure Pd, which is close to suction pressure Ps. If crank-
case pressure Pc rises due to capacity control, the force around the link makes the swash plate angle
decrease and also the piston stroke decrease. In other words, crankcase pressure increase triggers pres-
SJIA0547E

Page 471 of 5621

INFINITI M35 2006 Factory Service Manual ATC-24
REFRIGERATION SYSTEM
Revision: 2006 January2006 M35/M45
sure difference between the piston and the crankcase. The pressure difference changes the angle of the
swash plate.
SJIA0548E

Page 472 of 5621

INFINITI M35 2006 Factory Service Manual REFRIGERATION SYSTEM
ATC-25
C
D
E
F
G
H
I
K
L
MA
B
AT C
Revision: 2006 January2006 M35/M45
Component LayoutNJS000G2
RJIA4015E

Load next 8 pages

Page: < prev 1-10 ... 433-440 441-448 449-456 457-464 465-472 473-480 481-488 489-496 497-504 ... 5624 next >

buttons oil additives battery high beam emergency towing spark plugs