Honda Civic/Acura Integra
since 1994 of release
Repair and car operation
+ Honda Civic and Acura Integra brand Cars
+ Maintenance instruction
+ Routine maintenance
- Engine repair without extraction from the car - the Civic models
Preparatory actions and the list of repair procedures which can be executed without engine extraction from the car
Reduction of the piston of the first cylinder in the provision of the top dead point (VMT)
Removal and installation of a cover of a head of cylinders
Removal and installation of the inlet pipeline
Removal and installation of a final collector
VTEC systems - the general information and check of a condition of components
Removal, check of a condition and installation of assembly of yokes
Replacement of klapanny springs with plates and maslootrazhatelny caps
Removal, check of a condition and installation of a gas-distributing belt and cogwheels of a drive of GRM
Replacement of a forward epiploon of a cranked shaft
Removal, check of a condition and camshaft installation
Removal and installation of a head of cylinders
Removal and installation of the pallet of a case of the engine
Removal, check of a condition and installation of the oil pump
Removal and flywheel installation / driving disk
Replacement of a back epiploon of a cranked shaft
Check of a condition and replacement of support of a suspension bracket of the power unit
+ engine Repair without extraction from the car - the Integra models
+ General and major maintenance of the engine
+ cooling and heating Systems
+ 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
+ Onboard electric equipment
VTEC systems – the general information and check of a condition of components
Some of models of Honda cars are equipped with electronic system of correction of phases of a gazoraspredeleniye (VTEC). On the Civic models the VTEC system of one of two various types (by VTEC and VTEC à) can be used.
Distinction between ordinary engines and the engines equipped with VTEC system, consists in a complete set and a principle of operation of the klapanny mechanism. A design of the block of the engine and all hinged knots and units, and also schemes of the organization of systems of greasing and cooling on both units are identical. Engine outwardly equipped with VTEC system differs existence from above on a cover of a head of cylinders of a convex inscription of the corresponding contents (VTEC).
The onboard processor of the models equipped with VTEC system is capable to correct phases of operation and size of opening of inlet valves at the expense of use of various size of cams of a camshaft. The processor, depending on data arriving from the information sensor, either includes, or switches off system.
As initial parameters for VTEC systems of both types the following is used:
a) Frequency of rotation of the engine (rpm);
Configuration and principle of functioning of systems VTEC à differ from those for VTEC systems (see below) a little.
VTEC à (D16Y5)
The camshaft is equipped both primary, and secondary cams of a drive of inlet valves. Cams differ both in a form, and on height of liftings, i.e. the parameters defining duration and extent of opening of valves.
At small turns of the engine secondary valves work from own cams of a camshaft having very small lifting and a peaked form (i.e. valves are slightly opened only slightly and very much for a while), holding the sprayed fuel from consolidation in a head of cylinders. The good torque with high speed of response to gas thus develops.
If there is a need for increase of return of the engine, secondary yokes are blocked with primary by means of the special hydraulic device with electronic control.
Cams of a drive of primary and secondary inlet valves of a camshaft in this system are identical in a form and height of liftings. Between them the additional third cam called by the also intermediate is located. These intermediate cams differ in bigger height and a smaller sharpness of lifting that provides big size and duration of opening of the valve.
At small turns of the engine both primary, and secondary inlet valves work from own cams and open on identical height and with identical duration (unlike system VTEC à). When there is a need for increase of return of the engine, yokes of both inlet valves by means of the special hydraulic device with electronic control are blocked with an intermediate yoke. Thus duration and height of opening of both valves is defined by a form of the intermediate cam, differing bigger height and a smaller ostrokonechnost of lifting.
The system allows to achieve an optimum torque both at small, and at high turns of the engine, depending on the current loading enclosed to it.
Check of a condition of components
Proof-readers of klapanny gaps (only VTEC)
Four proof-readers of klapanny gaps are placed in holders, forming similarity of hydraulic pushers.
Plate of distribution of phases, plug and returnable spring (only VTEC à)
Four plates of distribution of phases with returnable springs (see an illustration below) are planted in holders of a camshaft on an axis of inlet yokes.
Electromagnetic valve of blocking of VTEC
Malfunctions in a contour of the electromagnetic valve of blocking of VTEC lead to operation of a control lamp “Check the engine” on the car dashboard. At the same time in memory control units the code of malfunction (DTC) Р1259 is brought. On a design the valve of blocking of VTEC with the built-in sensor switch of pressure is similar used in VTEC system of the Integra models. The description of procedure of check of serviceability of functioning of assembly is provided in the Part engine Repair without extraction from the car - the Integra models of the present Chapter.
Yoke of the primary valve
Yoke of the secondary valve
Intermediate yoke (only VTEC)
Intermediate cam of a camshaft (only VTEC)