Honda Civic/Acura Integra

since 1994 of release

Repair and car operation

Honda Tsivik
+ Honda Civic and Acura Integra brand Cars
+ Maintenance instruction
+ Routine maintenance
+ Engine
- Cooling and heating systems
   Antifreeze - general information
   Check of serviceability of functioning and thermostat replacement
   Check of a condition of the fan (ов) systems of cooling and chain of its inclusion, fan replacement (ов)
   Removal and installation of a radiator and broad tank of system of cooling
   Removal and installation of a maslookhladitel
   Check of a condition of the water pump
   Replacement of the water pump
   Check of serviceability of functioning and replacement of the block of the sensor of a measuring instrument of temperature of cooling liquid
   Check of serviceability of functioning of the driving electromotor of the fan of a heater and condition of components of its electric chain, replacement of components
   Removal and installation of the electromotor of a drive of the fan of a heater
   Removal and installation of assembly of the control panel by functioning of a heater and air conditioner, adjustment of a driving cable
   Replacement of the heat exchanger of a heater
   Check of serviceability of functioning and service of systems of heating and air conditioning
   Check of an electric chain of the coupling of coupling of the To/in compressor
   Removal and receiver dehumidifier installation To/in
   Removal and To/in compressor installation
   Removal and To/in condenser installation
   Removal and To/in evaporator installation with the broad valve
+ Power supply system and release
+ engine Electric equipment
+ Control systems of the engine
+ gear shifting Box
+ clutch and power shafts
+ Brake system
+ Suspension bracket and steering
+ Body
+ Onboard electric equipment


Cooling and heating systems

General information

System of cooling of the engine

All models of cars considered in the real Management are equipped with system of cooling of the engine working at superfluous pressure with thermostatic management of circulation of working liquid (see illustrations below). Rotor type the water pump is fixed on the block of the engine and provides pumping of cooling liquid through the last. The stream of liquid washes regions of an arrangement of each of cylinders in the block and goes to a back part of the engine. Laid in molding of the block and a head of cylinders okhladitelny channels provide intensive cooling of inlet and final ports, areas of installation of spark plugs and directing plugs of final valves.

The Voskozapolnenny thermostat supervises working temperature of the engine in the course of its warming up. The first minutes after start of the cold engine the thermostat remains closed, preventing thereby circulation of cooling liquid through a radiator. When the temperature of the engine reaches normal working value, the valve of the thermostat opens, connecting to a cooling contour a radiator providing the maximum intensity of a heat-conducting path from a working body (cooling liquid).

The system of cooling is closed by a tight cover of the radiator, capable to maintain a certain superfluous pressure that provides increase of a boiling point of cooling liquid and, respectively, efficiency of a heat-conducting path through a radiator. At excess by internal pressure in system of some certain value, the podpruzhinenny plate of the radiator of a safety valve built in in a cover rises over the saddle, providing an overflowing of excess of cooling liquid on a connecting (perelivny) tube in a broad tank. In process of system cooling liquid from a tank automatically comes back to a radiator.

Having added cooling liquid in system it is made through a mouth of a broad tank which at the same time acts also as a receiver accumulating in forced out from a radiator excess of liquid.

In view of the listed features of the design, such system of cooling received the name closed as in it any functional losses of cooling liquid are excluded.

Heating system

The main components of system of heating of salon are the electric fan and the heat exchanger located in a box-shaped casing of a heater. The heat exchanger is connected by means of rubber hoses to system of cooling of the engine. The control unit is built in by functioning of the heater/conditioner of air in the car dashboard. The cooling liquid warmed up in the engine circulates via the heater heat exchanger, giving the to air warmly containing in a casing. At inclusion of heating of salon there is an opening of a lamellar zaslonka and internal volume of a casing of a heater incorporates to salon volume. At turning on of the fan the krylchatka of the last starts to banish air arriving in salon via the heat exchanger, providing its intensive warming up.

Air central air

The structure of system includes the condenser established before a radiator close to the heat exchanger of a heater the evaporator, fixed on the engine block the compressor and a receiver dehumidifier equipped with the reduktsionny valve. All components are connected among themselves by refrigerator lines.

The fan banishes air arriving in salon via the heat exchanger of the evaporator working in a mode, the return to a mode of functioning of a radiator. A coolant pumped over through the heat exchanger, evaporating, selects at air surplus of heat. The temperature in salon thus reduces to comfortable value (at the choice of the operator).

Arrangement of components of system of cooling in an impellent compartment of the car (Honda Civic)

1 — Heating hoses
2 — Nizhny a radiatorny hose
3 — the Broad tank
4 — the Top radiatorny hose

5 — a radiator Cover
6 — Fans of system of cooling
7 — the Refrigerator hose To/in
8 — the To/in Compressor

Arrangement of components of system of cooling in an impellent compartment of the car (Acura Integra)

1 — Nizhny a radiatorny hose
2 — the Top radiatorny hose
3 — the Broad tank
4 — a radiator Cover

5 — Fans of system of cooling
6 — the Refrigerator hose To/in
7 — the To/in Compressor