{"id":4168,"date":"2017-09-29T16:07:43","date_gmt":"2017-09-29T14:07:43","guid":{"rendered":"http:\/\/www.checkstar-techblog.it\/?p=4168"},"modified":"2022-11-11T14:46:08","modified_gmt":"2022-11-11T13:46:08","slug":"supercharging-engine-endotherms-fourth-part","status":"publish","type":"post","link":"https:\/\/www.checkstar-techblog.it\/en\/supercharging-engine-endotherms-fourth-part\/","title":{"rendered":"Supercharging endothermic engines (part four)"},"content":{"rendered":"

Cases of anomalies\u00a0<\/strong><\/p>\n

As anticipated, below are some real cases of anomalies that have happened to your colleagues in the Checkstar network and have been submitted to us.<\/p>\n

The cases have been selected so that the reactions of the supercharging system can be identified according to the defect and at the same time a targeted diagnosis can be made, ruling out plausible but unresolved possible causes of failure.<\/p>\n

 <\/p>\n

Peugeot 207 - 1.6 HDI 90hp (DV6TED4 -9HV) year 2007-2010.<\/strong><\/p>\n

\"\"<\/p>\n

Anomaly found:<\/strong><\/p>\n

exceeding 3500 rpm the car enters recovery and the engine light comes on.<\/p>\n

Diagnosis with Tester Flex shows the error P0234: excessive overfeeding<\/strong>.<\/p>\n

 <\/p>\n

Possible causes, listed by priority.<\/strong><\/p>\n

1. TURBOCHARGER PRESSURE SENSOR<\/strong>The pressure read by the sensor is out of range: it is too high compared to the mapped pressure, so the CCM sets the recovery strategy to safeguard the engine.<\/p>\n

2. TURBOCHARGER VARIABLE GEOMETRY<\/strong>The turbocharger blades may get stuck in a specific position during actuation, e.g. due to sludge build-up; the CCM sets the recovery strategy to safeguard the engine.<\/p>\n

3. WESTGATE VALVE<\/strong>The valve remains blocked and consequently does not allow the discharge of excess pressure generated by the turbocharger; the CCM sets the recovery strategy to safeguard the engine.<\/p>\n

 <\/p>\n

Solution adopted<\/strong><\/p>\n

After Preliminary Checks 1 and 2, the workshop tech noticed that at a manual prompt the westgate always remained open even when the engine was switched off; he then checked that this was not a solvable problem on the existing valve, but with negative results.<\/p>\n

Once the wastgate was replaced, the problem no longer occurred: case solved!\u00a0 <\/strong><\/p>\n

We look forward to the next case... good work.<\/p>\n

 <\/p>\n

\"\"<\/p>\n

 <\/p>\n

 <\/p>\n

 <\/p>\n

\u00a0<\/strong><\/p>","protected":false},"excerpt":{"rendered":"

Anomaly cases As anticipated, below are some real cases of anomalies that happened to your colleagues in the network [...].<\/p>","protected":false},"author":49,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"acf":[],"featured_image_urls":{},"appp_media":null,"views":1345,"_links":{"self":[{"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/posts\/4168"}],"collection":[{"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/users\/49"}],"replies":[{"embeddable":true,"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/comments?post=4168"}],"version-history":[{"count":0,"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/posts\/4168\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/media?parent=4168"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/categories?post=4168"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.checkstar-techblog.it\/en\/wp-json\/wp\/v2\/tags?post=4168"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}