《江西应用技术职业学院2010～2011学年第一学期《汽车电气设备构造与维修》期末试卷(D)文本文档.doc》由会员分享，可在线阅读，更多相关《江西应用技术职业学院2010～2011学年第一学期《汽车电气设备构造与维修》期末试卷(D)文本文档.doc（21页珍藏版）》请在三一文库上搜索。
1、江西应用技术职业学院20102011学年第一学期汽车电气设备构造与维修期末试卷(D)文本文档1. Holzer effect: a energized crystal semiconductor produces a Holzer electromotive force in a magnetic field in its direction perpendicular to the current.2., the best ignition advance angle: when the load is constant, the engine power is the biggest, a
2、nd the fuel consumption is the lowest, the ignition advance angle.3. vulcanization: the formation of a layer of white coarse granular lead sulfate on the plate of the battery, under normal circumstances can not be converted into two lead oxide and sponge lead, this phenomenon known as sulfuric acid
3、hardening, referred to as sulfide.4. ignition timing: work order siyee engine spark to ignite the mixture on time.5. no load test:6.6 - QAW - 100: rated voltage of 12V, rated capacity of 100A/h starting dry load free maintenance battery.7. an ignition signal generator: a device that senses the posit
4、ion changes of a camshaft or crankshaft and an outgoing change signal.8. rectifier circuit: alternating current into direct current circuit.9. voltage regulator: a device that senses the generator output voltage variation and regulates the excitation current of the generator to keep the output volta
5、ge of the generator stable.10.JFZ1913Z: the voltage is 12V, the current level is greater than or equal to 90A, and the thirteenth design is to adjust the arm to the left of the integral alternator.11.QD1225: the voltage level is 12V, the power level is 12KW, and the starting type starter designed by
6、 twenty-fifth times.12. angle of closure: the angle at which the distributor shaft turns during contact closure.13. ignition signal generator:1. the starter is mainly composed of DC motor, transmission mechanism and control mechanism.2. automobile power supply system includes accumulator, alternator
7、 and voltage regulator, discharge warning lamp and relay.3. the electrolyte is a mixture of 1.831.84 g/cm3, which is made up of pure sulfuric acid and distilled water in a certain proportion. The relative density varies with area temperature. At the standard temperature of 20 degrees centigrade, the
8、 density of the electrolyte is generally 1.241.30 g/cm3.4. the factors that affect secondary voltage are carbon deposition, contact gap, capacitor, closing angle and ignition coil temperature.5. the secondary voltage waveform is important in diagnosing the ignition system failure. The secondary volt
9、age waveform is divided into four areas: jump zone, combustion zone, the closed region and the oscillation region.6. the starting system of automobile mainly consists of accumulator, ignition switch, starting relay, starter and so on. The core part of the system is starter.7. the function of the bru
10、sh and the brush holder in the automobile starter is to introduce the current into the armature, which makes the armature rotate continuously under the action of the magnetic field.8. the function of the electromagnetic switch is to control the connection or disconnection of the starter circuit and
11、the engagement of the drive gear with the flywheel ring gear.9. common starting system control circuits are: no start relay control circuit, with starting relay control circuitAnd protective relay control circuit.The mixture in the cylinder of the 10. gasoline engine is ignited by an electric spark,
12、 and the spark ignition function is realized by the spark plug.TwelveThe traditional ignition system consists of low voltage routing power supply, ignition switch, additional resistor, primary winding in ignition coil, breaker in the distributor assembly, capacitor and so on.13., the ignition system
13、 of high voltage routing power supply, ignition switch, ignition coil secondary winding, high voltage wire, distributor, spark plug and so on.The maximum clearance between the two contacts of the 14. breakpoint breaker is called the contact gap. Generally 0.350.45 mm.15. generally, the contact gap i
14、s large, the corresponding closing angle is small, the contact gap is small, and the corresponding closing angle is large.The 16. capacitor is connected in parallel to both ends of the breaker contact and is mounted on the outer shell of the distributor, and the capacity is generally between 0.150.3
15、5 and F.17. high voltage spark ignition system is generated at the moment of the primary winding is disconnected, the off contact time determines the ignition time of the ignition time sooner or later, so the adjustment is to adjust the off contact time.18., there are two ways to adjust the ignition
16、 time, that is, the rotating cam and the rotating contact. Clockwise cam ignition, clockwise contact ignition lag.19. make the spark plug work at a lower temperature range, which is called the self-cleaning temperature of the spark plug, approximately 450 degrees centigrade.The upper temperature tha
17、t makes the spark plug work at a good temperature range is called the pre ignition temperature of the spark plug, approximately 950 degrees centigrade.20., the normal working temperature range of spark plug is 450 950 centigrade.21. under normal conditions, the breakdown voltage of the spark plug is
18、 only 8000 V. The voltage of the spark between the spark plugs is only 12KV V.22. electronic ignition system consists of power supply, ignition switch, ignition module, ignition coil, sensor distributor assembly, high-voltage wire, spark plug and so on.23., the United States, Japan produced vehicles
19、 using electromagnetic induction type signal generator is more, Germany and Western European countries, the production of vehicles with Holzer effect type signal generator more.24. Holzer belongs to the active signal generator signal generator, working to provide current, so the terminal has three w
20、ires, a power line, a grounding wire, the other one for the signal line.25., the signal produced by the Holzer signal generator is a signal of high and low voltage, and the signal produced by the magnetic induction type signal generatorIt is positive and negative voltage pulse signal.26. battery is
21、a chemical power supply by the internal chemical reaction in charging the power supply of electrical energy into chemical energy stored in the discharge when the stored chemical energy into electrical energy for electric equipment supply.27. batteries in use, winter discharge more than 25%, summer d
22、ischarge more than 50%, or headlight light than usual dull, or start weak, you must recharge the battery.28. the rechargeable battery is recharged within 24 hours.29. by measuring the density of electrolyte of each cell, can determine whether the failure of the battery. If the cell density is 0.0095
23、 g/cm3, the battery is invalid.30. integrated circuit regulator can be divided into battery voltage detection method and generator voltage detection method, the detection is to regulate the voltage sampling.Resistance of 31. silicon rectifier generator rotor coil, multimeter R* 1 speed measurement,
24、its normal value is 2.5 6, if the measured resistance smaller than the normal value, indicating that part of short circuit; more than the normal value indicating circuit fault.32. the role of distributor is to distribute secondary pressure to the spark plugs of each cylinder according to the order o
25、f work done by each cylinder of the engine.The 33. Holzer sensor consists of a trigger impeller, a permanent magnet and a Holzer element.34., electronic ignition system is actually the use of semiconductor devices as switches, switch on or disconnect the primary circuit, which is also known as semic
26、onductor ignition or transistor ignition.35. the ignition advance angle of the ignition system controlled by microcomputer consists of the initial ignition advance angle, the basic ignition advance angle and the correction ignition advance angleThree parts.36. the control method of ignition advance
27、angle of ignition system controlled by microcomputer includes distributor control mode and distributor control mode.1. a terminal of a generator is marked with the D+ sign, which indicates the terminalAs follows: (C)(a) magnetic field connecting column; (b) armature output pin; (c) excitation voltag
28、e; output pin; (d) neutral point post.2. car charging indicator light, when the generator is not started or at low speed, the generator speed exceeds 1000r / min above, the charging indicator lamp to show the battery in the state. (C)(a) extinguish, light, charge, (b) light, extinguish, discharge;(c
29、) light up, extinguish, charge, (d) extinguish, light, discharge.3. gasoline car mostly use low voltage, how many volts voltage supply? Diesel trucks mostly use low voltage and V volts to supply power (C)(a) 24V, 12V; (b) 24V, 24V; (c) 12V, 24V; (d) 12V, 12V.4. the additional resistance is usually a
30、ssociated with the ignition coil. (B)(a) the primary winding is connected in parallel; (b) the primary winding is connected in series; (c) the secondary winding is connected in parallel; (d) the secondary winding is connected in series.5. when the electromagnetic switch of the starter works, it is (
31、C).(a) turn on the main circuit first, then engage the pinion with the flywheel.(b) engage the drive gear with the flywheel first, then switch on the main circuit.(c) when the main circuit and the pinion are connected with the flywheel, the contract is carried out.(d) without prior requirements.6. t
32、he main function of the accumulator in the automobile is (C).(a) for charging(b) an overvoltage used to absorb an engine to protect electronic components.(c) used to power the starter and start the engine(d) reserve power7. which of the following statements is false about the requirements of the eng
33、ine to the ignition system (D)?.(a) when the working conditions of the engine change, the ignition advance angle will change accordingly.(b) when the spark plug fires, it should have enough energy.(c) ignition according to the order of the cylinders.(d) the high voltage generated by the ignition sys
34、tem is up to 100200V.8. for high speed, high power and high compression ratio of the engine, the cylinder temperature, should use the type spark plug; for low speed, low power and low compression ratio of the engine, the working temperature of D cylinder, should choose the type spark plug.(a) high,
35、hot, low, cold; (b) low, cold, high, hot; (c) low, hot, high and cold; (d) high, cold, low, hot.9. one of the reasons for the excessive consumption of electrolyte solution in batteries is (A).(a) the charging current is too large; (b) the charging current is too small; (c) the charging current is un
36、stable; (d) no charging current.10. when the engine is working, the electrical energy required for on-board electrical equipment is provided by (B).(a) accumulator; (b) generator; (c) ignition coil; (d) engine.11. a model of 3 - Q - 90 battery, its 20 hours discharge current is (C).(a) 3A; (b) 6A; (
37、c) 4.5A; (d) 90A.12. in the closed circuit, if the internal resistance of the battery is increased, the output voltage will be (B).(a) elevated; (b) decreased; (c) constant; (d) independent.The alternator is equipped with a regulator on the 13. car, which has the performance of (B).(a) limiting its
38、maximum output current; (b) limiting its maximum output voltage;(c) limiting both the maximum output current and the maximum output voltage; and (d) control the excitation current to remain constant.14. frequently burned bulb and contact failures are due to: (C).(a) the charging current is unstable;
39、 (b) the generator belt is slipping; (c) the regulator regulates the voltage too high; and (d) the charging current is too large.15. AC generator brush in the mount is sluggish or brush wear is too large, will make the generator (A).(a) making noise; (b) charging current is too large; (c) not genera
40、ting electricity; (d) not affected.16. when the vehicle is idling, the most likely cause of the dimming of the bulb is (A).(a) low battery voltage; (b) excessive tension of belt;(c) the generator output voltage is low; (d) the headlamp switch is faulty.17. the number of starter magnetic poles is gen
41、erally (B) pole.(a) 2; (b) 4; (c) 8; (d) 12.18. when starting a car, the starter shall not exceed (C) at a time.(a) 15s; (b) 10s; (c) 5S; (d) 3S.19. remove the capacitor lead on the distributor, the ignition coil jumps out of the high voltage spark, but the wire does not skip the spark, which shows
42、the capacitor (B).(a) burned; (b) broken; (c) broken; (d) intact.20. rotor breakdown leakage will cause (B).(a) all spark plugs have a fire; (b) all spark plugs have no fire; (c) a few cylinders do not work; (d) the ignition is deranged.21. the Holzer component in the Holzer signal generator belongs
43、 to the (B) component.(a) insulators; (b) semiconductors;(c) conductor; (d) plasma.22. the components connected to the ignition coil power supply terminal are (D).(a) breaker; (b) ignition signal generator; (c) starter; (d) ignition switch.The earlier the ignition time of the 23. gasoline engine, th
44、e possibility of deflagration will occur (A).(a) greater; (b) smaller; (c) not; (d) independent of ignition time.The 24. generator does not generate power failure. After the short contact regulator is connected with the F column, the generator begins to generate electricity, which indicates that the
45、 fault is in (C)(a) generator; (b) charging indicator; (c) regulator; (d) ammeter.The device for generating a magnetic field in the 25. generator is (A).(a) stator; (b) rotor; (c) armature; (d) rectifier.26., the cause of the inability of the starter to run is (A).(a) draw the coil open circuit; (b)
46、 the battery is short of power;(c) dirty commutator; (d) contact ablation and deformation in electromagnetic switch.27. the engagement position of the starter drive gear is maintained by the suction of the (A) coil in the solenoid switch.(a) maintain; (b) attract; (c) primary; (d) secondary.28. in t
47、he process of judging that the starter can not run, when the car is short connected to the electromagnetic switch terminal 30 and the terminal C, the starter does not operate, indicating that the fault is in (B).(a) the control circuit of the starter; (b) the starter itself;(c) no distinction can be
48、 made; (d) engines.1. the secondary voltage of the battery (conventional) ignition system decreases with the increase of crankshaft speed and cylinder number. (V)2. the generator and accumulator are connected in parallel. (V)Ground electrode spark plug 3. is negative, more conducive to the ignition. (V)The 4. starter is composed of a draw coil, a retaining coil an