Design features. Nissan Almera (from 1995 to 1999 of release)
Nissan Almera service from 1995 to 2000 in N15 body
1. General information
2. The general requirements to car repairs
3. Operation and car maintenance
4. Petrol engines
5. Diesel engines
5.1. General information
5.2. Block of cylinders and krivoshipnoshatunny mechanism
5.3. Gazoraspredeleniye mechanism
5.4. Cooling system
5.5. Greasing system
5.6. Power supply system
5.6.1. Design features
5.6.2. Removal and TNVD installation
5.6.3. TNVD adjustment
5.6.4. Check of adjustment of TNVD
5.6.5. Adjustment of idling of the CD20 engine
5.6.6. Adjustment of the maximum frequency of rotation without CD20 engine loading
5.6.7. Adjustment of the shock-absorber of a drive of management by supply of fuel
5.6.8. Replacement of a belt of a drive of TNVD
5.6.9. Air and sediment removal from the fuel filter and system of supply of fuel
5.7. Control system of the CD20 engine
5.8. Control system of the CD20E engine
5.9. System of production of the fulfilled gases
6. Transmission
7. Running gear
8. Steering
9. Brake system
10. Electric equipment
11. Body
12. Appendices
13. Electric equipment schemes
 









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5-6-1-konstruktivnye-osobennosti.html

5.6.1. Design features


Fig. 3.29. Details of system of supply of fuel: I\the CD20 engine without a fuel heater; II\the CD20 engine with a fuel heater; III\CD20E engine; 1 — the water level sensor in a settler of the fuel filter; 2 — laying;
3 — the fuel filter; 4 — an arm of fastening of the filter of the manual toplivopodkachivayushchy pump; 5 — bringing топливопровод; 6 — drain топливопровод; 7 — the fuel level sensor; 8 — a fuel tank; 9 — a bulk pipe; 10 — a cover of a fuel tank; 11 — a regulator fuel plum


Into a power supply system enter the fuel pump of a high pressure (TNVD) of distributive type which is put in action by a gear belt from a camshaft, a nozzle, the fuel filter and топливопроводы, details of an air path of the engine. Details of system are represented on fig. 3.29, 3.30, 3.31.

Fig. 3.30. Details of system of injection of fuel: I\CD20 engine; II\CD20E engine; 1 — a gear pulley of a drive of TNVD; 2 — a TNVD case cover; 3 — an arm; 4 — a shponka; 5 — TNVD; 6 — a drain hose; 7 — топливопроводы a high pressure; 8 — the drain pipeline; 9 — a cap; 10 — a fastening nut; 11 — laying; 12 — the top part of the case of a nozzle; 13 — an adjusting washer; 14 — a spring; 15 — a pusher; 16 — a pro-rate; 17 — a sock of a spray of a nozzle; 18 — the lower part of the case of a nozzle; 19 — a thermoprotective washer; 20 — an arm for engine lifting; 21 — a nozzle with the sensor of lifting of a needle (the 1st cylinder)


Fig. 3.31. Details of an air path of the engine: 1 — the inlet pipeline; 2 — laying; 3 — the HORN system pipeline; 4 — the HORN system valve; 5 — an adapter; 6 — the air distributor; 7 — an air line; 8 — a branch pipe of the air filter; 9 — a cover of the case of the air filter; 10 — a filtering element; 11 — the case of the air filter; 12 — an air inlet; 13 and 14 — resonators


The fuel tank is stamped by capacity of 60 l from a steel sheet and fixed under a body before a back axis. In a fuel tank the fuel level sensor is established. Access to the sensor is carried out via the hatch in a body floor under a back seat. Indications of the index of level of fuel can be оттарированы according to tab. 3.11.

Table 3.11  fuel level sensor Check
Indications of the index of level of fuel in a combination of devices
Distance between the center of a float and a privalochny surface of the sensor, mm
Values of resistance between conclusions «In and «3», Ohm
Arrow at the beginning of a scale
131
78-85
Arrow in the middle of a scale
36
27-35
Arrow at the end of a scale
36
4-6


Fig. 3.32. Regulator fuel plum: I\the temperature of fuel is higher than 30 °C; II\the temperature of fuel is lower than 30 °C; 1 — a fuel tank; 2 — a regulator fuel plum; 3 — the fuel filter; 4 — TNVD;
5 — a nozzle; 6 — a branch pipe to a fuel tank; 7 — a branch pipe from TNVD; 8 — the drain valve; 9 — a filtering element; 10 — a float; 11 — the return valve


In system the regulator fuel plum (fig. 3.32) which is established between TNVD and a fuel tank is applied. Fuel, passing through the filter, TNVD and nozzles is warmed up in process of engine warming up. The regulator fuel plum at temperature of fuel is lower 30 ° About a part than it sends to the fuel filter for heating. At temperature over 30 ° From plums of fuel occurs in a fuel tank.
The fuel filter of the Nissan 16403-59EOO brand with a replaceable filtering element fastens to a cover on the left side of a front board in a motor compartment. Periodicity of service of the filter: sediment plums — through 10 000 km of run (at oil replacement in the engine); replacement of a filtering element — each 30 000 km of run.
The air filter with a replaceable dry paper filtering element of the Nissan V0100 type is located in the case on the left side about the storage battery in a motor compartment. Periodicity of replacement of a filtering element — through each 60 000 km of run.
The sensor of the index of existence of a sediment is established in the filter of rough purification of fuel. It gives out a signal on a control lamp in a combination of devices about need to merge a sediment.
The fuel pump of a high pressure is located behind on the left side of the engine and is put in action by a gear belt from a gear pulley of a camshaft from a flywheel. On CD20 engines TNVD with the rotating distributor, a centrifugal mechanical regulator of frequency of rotation, the electromagnetic valve of adjustment of an advancing of injection of the fuel, the operated electronic control unit (EBU), the device for start-up of the cold engine and the electromagnetic valve останова is established. On CD20E engines odnoplunzherny TNVD of distributive type with the electric drive of the proof-reader of supply of fuel, electromagnetic the valve of adjustment of a corner of an advancing of injection of fuel and the valve останова, operated EBU is established. Characteristics of TNVD are provided in tab. 3.12. TNVD does not demand adjustment, except for adjustment of a corner of an advancing of injection of fuel. Characteristics of nozzles are given in tab. 3.13. On CD20E engines the TNVD driving belt transfers also rotation to the vacuum pump. The direction of rotation is determined by shooters on a belt which should be directed towards the engine. The tension of a belt is regulated by a tension roller with the clown and a spring. Periodicity of replacement of a belt: through 90 000 km of run.
Nozzles (four) are rolled in a head of the block of cylinders. The adjusting washers used for installation of pressure of the beginning of injection, are issued in the thickness from 0,50 to 1,0 mm with an interval through each 0,04 mm.

Table 3.12  TNVD Characteristic
Parameter
CD20 engine
CD20E engine
Brand and type
ZEXEL NP-VE 4/10 F2500 LNP123S
ZEXEL NP-VE 4/10 E2500 LNP13
Catalog number
16700-7501
16700-2610
Course of a plunzher of the pump, corresponding to an initial corner of an advancing of injection of fuel when finding the piston of the 1st cylinder in VMT of a step of compression, mm
0,79-0,35
0,38+0,03
Initial corner of an advancing of injection of fuel to VMT (idling), a hail
8
0+1
Frequency of rotation of a cranked shaft idling, mines-1
700+50
725+25
Frequency of rotation of a cranked shaft on accelerated single to a course, mines-1
1300
 
The maximum frequency of rotation of a cranked shaft (without loading),
5400
5400

Table 3.13  Characteristic of nozzles
Parameter
CD20 engine
CD20E engine
Brand and type of nozzles
NPDNOSD1510
NPDNOSND220
Pressure of the beginning of injection, kPa:
 
 
new nozzles
12,75-13,53
13,24-14,02
the earned extra nozzles
12,26-13,24
12,26-13,24


The electromagnetic valve останова fastens at TNVD end face, blocks intake of fuel to the distributor. Resistance of the valve of 18 Ohm.

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5.6. Power supply system
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5.6.2. Removal and TNVD installation