Mitsubishi Lancer wing of God (LANCER EX) southeast of the car was not long ago launched a sports car, it is with the Mitsubishi imported 4B1 series 1.8 L and 2.0 L aluminum engine with MIVEC valve train technology. Engine with continuously variable transmission CVT is imported with six-speed movement pattern, its unique INVECS-III (intelligent vehicle electronic control system) can select the optimum gear ratio in accordance with road surface gradient, and with a high rigidity magnesium paddle for shifting alloy. In order to facilitate our understanding of the car’s maintenance staff, this introduces the main technical highlights of the car.
First, the engine system
1. Engine mechanical system
FIG 1
with the new inline four-cylinder DOHC 4-valve engine, i.e., paragraph 2 4B1 series VVT (MIVEC) engine (1) mdash; mdash; 4B10 (1.8 L) and 4B11 (2.0 L). Resin material intake manifold and exhaust manifold of stainless steel, a camshaft driven by chain, to meet Euro Ⅳ emissions.
(1) of the cylinder head and the camshaft
① with plastic material valve cover cylinder head and the aluminum alloy material, can be more lightweight, better cooling effect.
② intake camshaft and an exhaust camshaft respectively, by bearings 5, each cam shaft loads applied by a first bearing to bear, the first intake camshaft and the exhaust camshaft a bearing cap is common.
(2) a cylinder block and the piston
① aluminum alloy cylinder block and the timing chain cover, the cylinder head gasket of a metal material, heat resistance, good sealing and low cost. 5 using the crankshaft main bearing caps, by the force of the crankshaft to bear by the third bearing. Aluminum alloy pistons, piston pin bore offset from the center of the side force 0.8 mm. With the overall connection type water jacket.
② has plastically deformed the bolt head, and therefore can not be reused, the fastening torque of 35 N? M + 180 deg ;; crankshaft bearing cap bolts can be reused, and must be confirmed before installation if it reaches or exceeds rod lengthOver-limit (75.3 mm), the tightening torque of 26.5 N? M + 45 deg ;; rod bearing cap bolts can be reused, the thread should be measured minimum and maximum outer diameter portion before use, if the outer diameter difference exceeds a limit value (0.1 mm) must be replaced, the fastening torque of 20 N? m + 90 deg ;.
(3) timing means (FIG. 2)
FIG. 2
① use of a hollow camshaft, the camshaft has an internal oil adjusting the sprocket leading to the control valve oil passage n, camshaft position sensor target wheel integrated at the end of the camshaft. 2 through respective hollow camshaft sprocket driven by the timing chain, timing marks 3, in order to ensure the correct relative position between the three sprockets with the timing chain.
② pressing the timing chain having the built-in plunger spring tensioner, the tensioner arm of the chain tensioner push the plunger directly and automatically adjust the tension of the timing chain. After the engine stall, the tensioner plunger is a cam lock in place, this is to prevent the timing chain when the engine is started shaking. Note that, not the engine rotates in the reverse direction after the tensioner installed, which will make the tensioner plunger against the locking cam, or cause other problems.
FIG. 3
③ When removing the timing chain, please refer to the following procedure. Should first crankshaft sprocket confirmed, whether the timing mark timing sprocket on the intake camshaft and the exhaust camshaft sprocket, the insertion hole to the right of the tensioner and using a flathead screwdriver to loosen the hold rack (FIG. 3). The insertion hole of the left tensioner rack fixed to the tensioner, the removal of the upper guide plate and the chain tensioner arm, with the removal of the chain pin diameter of 1.5 mm.
(4) oil pump
The oil pump module is driven by the crankshaft through a chain tensioner for pressing the chain through the tensioner arm.
(5) a valve mechanism (FIG. 4)
Figure 4
① direct acting valve mechanism, a valve directly driven by the camshaft. Cold stateIntake valve clearance adjustment is 0.2 mm, the exhaust valve to adjust the gap of 0.3 mm, the valve clearance is adjusted by changing the valve tappet. There are 47 kinds of thickness of the valve lifter, a thickness of 3.00 ~ 3.69 mm, each type apart 0.015 mm, thickness identification mark (FIG. 5) a bottom valve lifter.
FIG. 5
② valve seal and the valve spring seat integrally formed (FIG. 6).
Figure 6
2. The engine control system
(1) crankshaft position sensor (FIG. 7) and a camshaft position sensor
Figure 7
teeth
is a crank position sensor 36 teeth (including toothless 3), an intake camshaft and an exhaust cam position sensor location GMR sensors material. GMR sensors using a material called giant magnetoresistive sensor with respect to the Hall sensor, it has a high sensitivity, wide detection range, and resistance to harsh environmental advantages.
(2) the generator (FIG. 8)
Figure 8
a generator-way clutch working to reduce the vibration of the engine with reverse twist to the belt vibrations. A generator rotor coils inside the delta connection, when the engine speed is high can increase the stability of the charging voltage.
(3) the catalytic converters and oxygen sensors
before and after the catalytic converter each equipped with a heated oxygen sensor.
bis, CVT transmission system
is provided with a stopper 6 with imported motion pattern F1CJA type continuously variable transmission CVT, an automatic transmission with respect to Mitsubishi F4A4B, dimensions F1CJA type continuously variable transmission CVT reduced, but with a separate transmission oil cooler.
1. Measurement hydraulic transmission (FIG. 9)
Figure 9
It can be measured by the following test wells hydraulic transmission housing (Schedule): DR– torque converter pressure, PRI– primary pressure, PL– line pressure, FWD– forward clutch pressure, REV– reverse brake pressure
Table
2. the read data transmission oil
[123 ] 10
in the transmission system of the data stream, the transmission oil temperature data is “count” instead ℃, so use transition diagram (FIG. 10) to count to a temperature. Recording the transmission control unit of the transmission oil deterioration degree, so after the replacement of the transmission oil, the degree of deterioration need to re-set value.
3. The transmission shift paddles (FIG. 11)
11
The transmission shift paddles made of magnesium alloy, the right side of the steering column for upshifting paddle, paddle left for downshifting. Since the shift paddles fixed to the steering column, so regardless of the steering angle, shift paddles can be held in a fixed position, the shift will not cause inconvenience.
Whether the transmission selector lever in the automatic shift mode or the sport mode, the shift can be performed paddles upshift and downshift operation, thereby achieving rapid shift. While the actuating paddle shifter exceeds 2 s, but the shift operation is invalid paddles in the parking or 4 min 25 s without any operation of.
Maintenance of the transmission 4.
stall speed
(1) the transmission is 2 400 ~ 2 900 r / min. Transmission oil model DIA QUEEN CVTF-J1, a capacity of 7.8 L; Hypoid gear oil is a gear oil (API GL-5), a capacity of 0.54 L.
(2) replacement of the transmission body, the transmission control unit or the transmission assembly, requires an initialization program. The shift lever to the P range, the ignition switch to the locked (OFF), then the fault diagnostic and Diagnosis linker. The ignition switch ONAnd then the shift lever placed in the R-range, the accelerator pedal is depressed while depressing the brake pedal (engine stall). It should be noted that the learning value can be initialized clear fault codes.
Third, the vehicle electrical system
1. The vehicle body and vehicle VIN code Code
12
[123 ]
13
the position where the VIN code yishen rather special, right front lower portion of the front end of the seat (FIG. 12). The meaning of the code models (FIG. 13).
2. New ETACS control unit (FIG. 14)
14
(. 1) is an electronic ETACS system timing and control unit , it is an important body control module system. The control unit incorporates novel ETACS ETACS conventional fuse and relay box J / B, has the following three functions: a control body electrical functions, gateway functions and modifications coding function. Electrical control functions such as body parts comprising: lighting, wiper, steering (critical alarm), central locking, the cockpit ceiling, power windows, power control and burglar alarm.
(2) due to the introduction of the power control function, the control unit integrated in the new ETACS ACC relay and the IG relay, no key control system is moved to the opening and closing control unit WCM, warning buzzer is moved close to the instrument driver, the new electronic ignition and cooling fan control.
15
(3) Since the communication on each bus are independent, and therefore must be assigned to the gateway information ETACS other buses ( Figure 15). MUT-Ⅲ due to a failure diagnostic apparatus for each bus line can not be physical measurement, therefore the ETACS perform diagnostics on the bus. When performing the gateway function, the ETACS functions comprising: routing communications data to the real-time data transmission of different networks; diagnosing, detecting bus circuit or short circuit the bus and stores the corresponding fault code; diagnosis communication, detecting incorrect data transmission ECU and store the correspondingDTCs.
(4) in an automobile manufacturing process, data indicating that the vehicle function and configuration (e.g., country of sale, vehicle configuration and motor type) of ETACS encoding, ETACS change control function according to the programmed data . Therefore, when the vehicle is modified, ETACS This feature allows minimizing hardware modifications, but only need to change the software, you can reduce the production cost components, the current automotive manufacturers have widely adopted this method.
3.KOS keyless operating system
KOS is an abbreviation of Keyless Operation System. When carrying the keyless remote operation, we do not remove the remote control and manipulate KOS can lock or open the door. KOS KOS remote control unit, the receiver, and the antenna module and outside the car antennas for radio communication. Difference WCM system and KOS system
(1): WCM integrated keyless start and blocking function and wafer antitheft device integrated system, while KOS addition WCM features, keyless operation (start) system It was also added into the KOS to, as long as the remote controller carry KOS, by activating knob (FIG. 16) to start.
FIG. 16
(2) WCM system and a receiver system KOS appearance antenna module, and a mounting position of the connector (vicinity of the ignition switch) respects identical. There WCM receiver antenna module on the product label an identification line (FIG. 17), while the receiver antenna module KOS is not, if an installation error, an error occurs due to the position of the terminal can not work.
17
(3) sandwiched KOS emergency key remote control (FIG. 18) intermediate, the emergency key identification code ID is not transmitted.
18
(Yang Zuotao)