Ford Focus>> Engines>> Options of Ford Focus engines>> Zetec-SE engine

Fig. 48. Dependence of capacity on turns for the Zetec-SE 1,4 engine — 1,6 l

The Zetec-SE engine was designed in close cooperation with Yamaha firm. The first engines ready to a mass production were tested on the Fiesta 1996 model of modeling year. As features of these engines it is possible to note their compactness, application of 4-perforated nozzles with electronic control, consecutive injection of fuel and a control system of the EES-V engine.
The considerable part of internal units, according to Ford's tradition, paid off proceeding from firm standards. All details and knots of the engine are made and collected with a fine precision, and also constant aspiration to lower weight characteristics of a design. Thanks to constructive decisions it was possible to reduce weight characteristics of details, to lower a friction of rubbing surfaces, to stabilize idling turns, to optimize number of harmful emissions, processes of burning of a fuel mix on all loadings and to increase comfort and maintainability of Zetec-SE engines.
The block and head of the block of cylinders, and also cases of the majority of the auxiliary units used in Zetec-SE engines, are made of the special aluminum alloyed alloys. For engines of the Zetec-E series and two diesel options blocks of cylinders are made of gray cast iron.
For reduction of weight of a cover of valves of all engines of the Zetec series are made of a magnesian alloy, the inlet pipeline — from thermoplastic artificial materials. In a head of the block two camshafts which operate four valves on each cylinder settle down. A number of constructive decisions creates preconditions for the subsequent modernization: achievements of good results in decrease in noise and vibration, the content of harmful emissions, costs of the subsequent service. Thanks to modern high-strength materials valves of the Zetec-SE series are checked each 100 000 km, and for Zetec-E engines and two diesel — for the first time after 150 000 km. Replacement of candles is provided after 60 000 km, and engine oil and the oil filter — after 15 000 km.
Zetec-SE — good turns, acceleration performance and convenience in service
Both options of engines of the SE series have good moshchnostny characteristics of a torque. Execution with volume of 1,4 and 1,6 l differs from the piston stroke changed by a ratio to diameter of the cylinder, other phases of a gazoraspredeleniye, and also valves of the smaller size. On Zetec-SE series engines in the block of cylinders sleeves from gray cast iron are established. In specially processed light-alloy pistons wearproof piston rings are established.
The belt for a drive of auxiliary units works silently. The drive of the oil pump is carried out directly from a cranked shaft. The water pump, the pump of the amplifier of a steering, the generator and the compressor of the conditioner are given from a belt which does not demand service.
Two camshafts, located in a block head, operate inlet and final valves respectively. The mechanism of a drive of valves is equipped with hydraulic pushers which automatically regulate a thermal gap in valves. As a result in use it is not required adjustments of valves. Demanded a tension of a belt it is carried out by an automatic natyazhitel.
In a design it is possible not only to hear and feel positive innovations, but also to estimate. In compliance to the NEFC standards the car with the Zetec-SE engine in volume of 1,4 l spends on the average 6,4 l of high-octane gasoline for 100 km of run, gathering the maximum speed of 171 km/h and being dispersed to 100 km/h for 14,1 pages. The car with the engine in working volume of 1,6 l spends 6,8 l for 100 km. Gathers the maximum speed of 185 km/h and about 100 km/h for 10,9 pages are dispersed.
The Zetec SE engine — that you should know
The codes of the engines which have been beaten out on a flange of a starter:
FXDA — the engine of 1,4 l of release till 2000 modeling years answers norms on toxicity of EURO II (except Germany);
FYDA — the engine of 1,6 l of release till 2000 modeling years answers norms on toxicity of EURO-II (except Germany);
FXDC — the engine of 1,4 l of release till 2000 modeling years answers norms on toxicity D-4 in Germany;
FYDC — the engine of 1,6 l of release till 2000 modeling years answers norms on toxicity D-4 in Germany;
FYDG — the engine of 1,6 l of release after 2000 modeling years answers norms on toxicity of ECE-R 1504.
Cover of a head of the block assembled
The cover of a head is made of a magnesian alloy. Cover laying at еt production привулканизируется to the cover also cannot be replaced separately. Pay attention before cover installation to possible damages of laying and in case of doubt replace completely assembly unit. The cover of a head is established on four hairpins. From below each fixing opening massive rubber jams which are replaced separately are established. Before installation of a cover of a stopper it is necessary to grease with engine oil, excessive oil to wipe a pure rag. Old jams do not use.

Fig. 49. Designations of covers of bearings of camshafts: 1 — a cover of the bearing of a camshaft of final valves; 2 — a cover of bearings of a camshaft of inlet valves

The provision of camshafts corresponding to position of the piston of the first cylinder in VMT at a step of compression, is fixed at installation by the special template inserted into a cuts at end faces of camshafts. For the sensor of an angle of rotation of a camshaft the camshaft of inlet valves has an additional cam. Before installation grease camshafts with pure engine oil. Covers of bearings have the corresponding marking: from installation of pulleys of a gear belt the cover of the bearing of a camshaft of inlet valves has marking of I, and final — Е1 (fig. 49) .

Fig. 50. Sequence of an inhaling of covers of bearings for two camshafts

At installation apply a thin film hermetic on interfaced to a head of the block of a surface of covers of forward bearings. If you are going to replace both cam-shafts or to change them on new, before check seats under bearings on a head of the block of cylinders or on covers of bearings. At appreciable wear of bearings it is necessary for you to change a head of the block or the damaged cover of bearings (fig. 50) .
Head of the block of cylinders
The head of the block of cylinders is made of an aluminum alloy and is established on the block of cylinders on directing plugs. New heads of cylinders are delivered assembled with camshafts and valves. At existence рисок or damages of a privalochny surface the head of the block is not under repair and is not subject to grinding. Not planeness of a privalochny surface is allowed no more than 0,05 mm.
The temperature sensor of a head of the block (CHT sensor) is near a spark plug of the 3rd cylinder. It takes temperature directly metal of a head of the block, instead of temperature of cooling liquid. The SNT sensor — a product of disposable application because of its deformation at installation. At installation of the new sensor be attentive with shtekerny contact, it especially easily breaks.
Laying of a head of the block
Laying of a head of the block — is multilayered metal laying. It is desirable to replace after each dismantle laying with the new.
Drive of the gas-distributing mechanism (GRM)
Both camshafts are actuated by a gear belt directly from a cranked shaft. Cams of camshafts affect pushers. A thermal gap of valves establish after 100 000 km of run by means of adjusting washers from above a pusher. At the cold engine it makes 0,17 — 0,23 mm for inlet valves and 0,27 — 0,33 mm (for the engine of 1,6 l — 0,31 — 0,37 mm) — for final. Natyazhitel of a belt of ekstsentrikovy type with a longitudinal groove. Service life of a gear belt makes 150 000 km of run or 10 years of operation.
Block of cylinders
The block of cylinders of engines of the Zetec-SE series make of an aluminum alloy with sleeves from gray cast iron. Ford delivers the block of cylinders only assembled with cranked shaft and pistons. All oil channels and channels plum of cooling liquid are closed by jams. If jams were dismantled that them it is necessary to replace with the new. Since September, 1999 on blocks drain caps are not put. On engines in volume of 1,6 l, unlike 1,4 l, repair of carving connections is not allowed.
Not to damage the top privalochny surface the block of cylinders it is established on a soft support. Not planeness of a privalochny surface should be in limits of 0,05 mm.
If it is necessary for you to replace the pump of water cooling, try to address carefully with its krylchatka. For the cars which are maintaining in the northern European countries, on engines the heating inductor for preliminary heating of the engine which is twisted in the block can be established.
Krivoshipno-shatunny mechanism of the engine

Fig. 51. Adjusting details of a cranked shaft. For its installation only one one-piece cover is used

Fig. 49. Designations of covers of bearings of camshafts: 1 — a cover of the bearing of a camshaft of final valves; 2 — a cover of bearings of a camshaft of inlet valves

Do not try to remove a cranked shaft independently as you cannot replace the interfaced details separately because of small admissions in interface of bearings. The cover of radical bearings made of an aluminum alloy, fixes a cranked shaft in the block. Simple supportive applications, for example by means of a piece of cardboard, you cannot measure a gap in radical podshinik. If at your order there is no nutromer and a micrometer, it is better to carry out this work in a specialized workshop (fig. 51) .

Fig. 52. Piston and piston rings. Pay attention to cuts of separate rings

Pistons are produced from strong aluminum alloys. On pistons two kompressionny rings of rectangular and step section and one below maslosjemny (fig. 52) are established . Before installation at plant pistons are adjusted.
Oil case

Fig. 53. The oil case with laying is applied on Zetec series engines

Aluminum oil cases protect Zetec-SE series engines. Before installation of an oil case carefully clear a privalochny surface and try to use new laying. Since November, 1999 of Ford instead of laying started to apply special pastelike hermetic. The hermetic containing силоксан, put on condensed surfaces of the block of cylinders, a flange of the oil pump and landing surfaces of epiploons of a cranked shaft. Metal laying is not provided. Pay attention to sequence of an inhaling (from the middle outside cross-wise) and the moments of an inhaling of bolts (fig. 53) .
Remenny pulley and quencher of krutilny fluctuations of a cranked shaft
At removal of a belt pulley and a quencher of krutilny fluctuations gazoraspredeleniye phases therefore you should check them and if necessary can be broken establish again as both the camshaft pulley, and the driving pulley of a gear belt located below without the screw tightened on the instruction freely rotate on cranked to a shaft. At pulley installation on cranked to a shaft apply fixing screw.

Fig. 58. Zetec-SE engine cut: 1 — the mechanism of a drive of valves; 2 — the piston; 3 — a maslootrazhatel; 4 — a maslopodayushchy pipe; 5 — a quencher of krutilny fluctuations; 6 — the water pump; 7 — a spark plug

Fig. 59. Zetec-SE engine front view: 1 — a camshaft of final valves; 2 — a camshaft of inlet valves; 3 — an inlet collector; 4 — a maslopodayushchy pipe; 5 — a cranked shaft; 6 — a final collector; 7 — a natyazhitel of a gear belt; 8 — a pulley of a camshaft of final valves; 9 — a pulley of a camshaft of inlet valves