Nissan Maxima QX
since 1993 of release
Repair and car operation
Nissan Maxima QX
+ Nissan Maxima brand Cars
+ Maintenance instruction
+ Settings and routine maintenance
+ Systems of cooling, heating
- Power supply system and release
Sbrasyvaniye of pressure in a power supply system
Check of serviceability of functioning of the fuel pump, measurement of pressure of fuel
Check of a condition and replacement of fuel lines and their shtutserny connections
Removal and installation of the fuel pump
Check of a condition and replacement of the sensor of fuel consumption
Removal and installation of a fuel tank
Cleaning and repair of a fuel tank - general information
Removal and installation of assembly of an air purifier
Removal, installation and adjustment of a cable of an accelerator
System of electronic injection of fuel (EFI) - the general information
Check of serviceability of functioning of system of injection
Check of a condition and replacement of the case of a throttle
Removal and installation of a regulator of pressure of fuel
Removal and installation of the fuel highway and injection injectors
Check and adjustment of turns of idling
Release system - the general information
+ engine Electric equipment
+ Control systems of the engine
+ Coupling and power shafts
+ Brake system
+ Suspension bracket and steering
+ Onboard electric equipment
General informationArrangement of components of a power supply system in an impellent compartment of models 1993 and 1994 of вып.
Arrangement of components of a power supply system in an impellent compartment of the V6 models
Function chart of system of injection of fuel of models 1993 and 1994 of вып., equipped with the catalytic converter
Function chart of system of injection of fuel of models 1993 and 1994 of вып. without the catalytic converter
Function chart of system of injection of fuel of models since 1995 вып., equipped with the 3-functional catalytic converter
The power supply system consists of the fuel tank placed in it of the electric fuel pump, a regulator of pressure of fuel (near the pump), the main EFI relay, the relay of the fuel pump (the relay of opening of a contour), the fuel highway with injectors of injection, assembly of an air purifier and the throttle case. All models described in the real Management are equipped with electronic system of the distributed injection of fuel.
System of the distributed injection of fuel
In considered system for management of fuel injection through injectors directly to the inlet port of each of chambers of combustion of the engine electric impulses of accurately limited duration are used. The moment and duration of time of opening of each of injectors supervises the module of management of functioning of the power unit (RSM). RSM continuously traces various working parameters of the engine and on the basis of arriving information defines the demanded volume injected in each of inlet ports of fuel. The throttle case in this case serves only for management of giving in an air power supply system. In view of that each of cylinders is equipped with own injector, this scheme provides possibility of very exact management with structure of an air and fuel mix.
Fuel pump and gasoline pipe lines
Supply of fuel from a fuel tank in system of injection and return of its surplus back in a fuel tank is carried out on two metal lines laid under the bottom of the car. The electric fuel pump is located by Pogruzhna in a fuel tank and united in uniform assembly with the block of the sensor of fuel consumption. The system of return of fuel evaporations carries out branch паров fuel back in a fuel tank on the separate returnable line.
The relay of the fuel pump consists of two windings (primary and secondary). Functioning of primary contour RSM operates, a food in a secondary contour moves directly from the battery via the ignition switch. At the included ignition (do not start the engine) RSM provides a 5-second zapityvaniye of the relay. At the moment of a provorachivaniye of the RSM engine submits a food on the relay until the sensor of provision of a camshaft will not give out the corresponding signal (see. Head of the Control system of the engine). In the absence of basic impulses within five seconds there is a shutdown of the fuel pump.
On the Californian models of 1995 вып., and also on all models 1996 and 1997 of вып. the module of management is provided by functioning of the fuel pump. The module provides a voltage reduction of a food of the pump, in all cases when the engine works without loading. The module is located in a luggage compartment under assembly of the left combined lamp. The lowering resistor is switched on in an electroconducting plait in close proximity to the module.
System of production of the fulfilled gases
The system of production of the fulfilled gases consists of final collectors, the reception pipe equipped with the oxygen sensor, the catalytic converter (it), the exhaust silencer and an exhaust pipe. On models since 1995 вып. two primary oxygen sensors, two heated-up catalytic converters and one secondary oxygen sensor are provided.
Catalytic converters are the main components of system of decrease in toxicity of the fulfilled gases (see. Head Control systems of the engine Control systems of the engineof ).