Kuvhiya kwepakarepo kunoitika kana injini yekumhanyisa inosvika 3000 rpm.

Phenomenon: Vatengi vanotaura kuti mota dzinowanzo wedzera, uye pese painenge ichivhiya, iyo throttle (accelerator pedal) inenge iri panzvimbo imwechete, uye panguva imwe chete, kushandiswa kwemafuta kunowedzera uye simba rinoderera.

Analysis:

1. Iyo throttle position sensor yakashata.

2. Iyo crankshaft position sensor yakashata uye chiratidzo hachina kugadzikana.

3, ignition system kutadza, zvichikonzera kushaikwa kwemoto mune tsaona.

4. Kukundikana kwetsaona kwemhepo inoyerera

Kuongororwa:

1. Dana kodhi yekukanganisa, zvichiratidza kuti musanganiswa wehuwandu hauna kunaka. Zvinogona kufungidzirwa kuti kukanganisa kunenge kwakabatana nekuvhurwa kwe throttle. Uchishandisa oscilloscope kuona iyo throttle position sensor, inoratidza kuti waveform yayo inoratidza zvinyoro zvekudzika pasi nekuwedzera kwekuvhura kwekuvhura, uye kutaridzika kwayo kwakatsetseka uye isina burr-isina, zvichiratidza kuti iyo throttle position sensor ndeye yakajairika.

2. Nemhaka yechimwe chiitiko chinokanganisa, kushandiswa kwemafuta kunowedzera uye simba rinoderera. Mhepo yekuyerera kwemamita uye sensor yeokisijeni yakaedzwa, uye mhepo yakawanda yekuyerera kwemhepo yaiva 4.8g / s pakukurumidza kusina maturo, uye chiratidzo chemagetsi cheokisijeni sensor chakaratidza nezve 0.8V. Kuti uone kunaka kweO2S, injini yakatanga kusaita basa nekumhanya kwakanyanya mushure mekudhonza chubhu yevacuum pane yakawanda yekutora, uye chiratidzo cheO2S chakadzikira kubva pa0.8V kuenda ku0.2V, zvichiratidza kuti zvaive zvakajairika. Nekudaro, panguva yekushanda idling, kuyerera kwemhepo kwakaramba kuchitenderera padiki amplitude ye4.8g/s. Mushure mekusunungura plug yemhepo yekuyerera mita, bvunzo yakatangwa zvakare, uye chikanganiso chakanyangarika. Kugadzirisa dambudziko mushure mekutsiva mita yekuyerera kwemhepo.

Pfupiso:

Kana sensor inofungidzirwa kuti haina kunaka, nzira yekubvisa plug sensor (iyo crankshaft position sensor haigone kuburitswa, kana zvisina kudaro mota haigone kutanga) inogona kushandiswa pakuyedza. Kana ipulagi ikabviswa, kutonga kweECU kunopinda muchirongwa chekumira uye kutsiviwa neakachengetwa kana mamwe masaini kukosha. Kana kukanganisa kuchinyangarika mushure mekusunungura, zvinoreva kuti kukanganisa kwakabatana ne sensor.