40:
191:" when descending from cruising altitude prior to landing. During descent, very little power is needed, so the engine is throttled back and thereby develops much less heat than when maintaining altitude. While descending, the plane's airspeed rises, substantially increasing the rate of air-cooling the engine. These factors may cause the cylinder head to crack; but the adoption of oil-cooled
183:
If air-cooling proves sufficient for much of the running time (such as for an aero-engine in flight, or a motorcycle in motion), then oil cooling is an ideal way to cope with those times when extra cooling is needed (such as an aero-engine taxiing before take-off, or a motorcycle in a city traffic
179:
available for lubrication, this oil is also piped to the cylinder head and used as a liquid coolant. Compared to an oil system used solely for lubrication, oil cooling requires additional oil capacity, a greater flow rate through the oil pump, and an oil cooler (or a larger cooler than normal).
258:
Thus, if through a gasket failure, coolant oil should enter, say, the combustion chamber or the sump, this would be a mere inconvenience; but if coolant water should similarly leak, substantial engine damage might
175:
that are not liquid-cooled. Typically, the cylinder barrel remains air-cooled in the traditional motorcycle fashion, but the cylinder head benefits from additional cooling. As there is already an
246:
Oil has a higher boiling point than water, so it can be used to cool items at a temperature of 100 °C or higher. However, pressurised water-cooling may also exceed 100 °C.
405:
252:
Oil is already present as a lubricant, so no extra coolant tanks, pumps nor radiators are required (although all of these items may need to be larger than otherwise).
176:
288:
Therefore, water may be a better coolant if an engine is permanently producing large amounts of heat, making it better for high-performance or racing engines.
209:
features oil cooling in addition to liquid-cooling to successfully manage its excessive heat. This rotary engine is most famous for its application in the
350:
255:
Cooling water can be corrosive to the engine and must contain a
Corrosion inhibitor/rust-inhibitor, whereas oil naturally helps to prevent corrosion.
269:
Coolant oil may be limited to cooling objects under approximately 200–300 °C, otherwise the oil may degrade and even leave ashy deposits.
285:
of water or water/glycol is about twice that of oil, so a given volume of water may absorb more engine heat than can the same volume of oil.
184:
jam). But if the engine is a racing engine that is always producing huge amounts of heat, water or liquid cooling may be preferable.
249:
Oil is an electrical insulator, thus it can be used inside of or in direct contact with electrical equipment such as in transformers.
409:
233:. This spoon would dip into sump oil and would hurl oil about, in the hope of cooling and lubricating the underside of the
104:
466:
76:
123:
83:
225:
is a rudimentary form of oil cooling. Some slow-turning early engines would have a "splashing spoon" beneath the
461:
325:
199:
61:
345:
90:
57:
406:"The 10 best motorcycle engines ... Ever! - 4. SUZUKI GSX-R1100 - Page 8 - Motorcycle Top 10s - Visordown"
72:
221:
148:
17:
272:
Pure water may evaporate or boil, but it cannot degrade, although it may become polluted and acidic.
50:
28:
385:
275:
Water is generally available should coolant need to be added to the system, but oil may not be.
8:
330:
97:
319:
172:
292:
308:
202:
oil-cooling system on the GSX-R sportbikes, but later switched to water-cooling.
195:
significantly reduces or cancels the problem as the heads are now "oil-warmed".
230:
152:
151:. The hot engine transfers heat to the oil which then usually passes through a
360:
455:
380:
314:
303:
282:
206:
192:
188:
430:
163:. The cooled oil flows back into the hot object to cool it continuously.
375:
340:
335:
214:
210:
140:
39:
298:
156:
226:
144:
443:
355:
293:
Examples of engines that are oil-cooled or partially oil cooled
234:
171:
Oil cooling is commonly used to cool high-performance
64:. Unsourced material may be challenged and removed.
453:
187:Air-cooled aviation engines may be subject to "
147:, typically to remove surplus heat from an
124:Learn how and when to remove this message
27:For the cooling of lubricating oil, see
14:
454:
62:adding citations to reliable sources
33:
278:Unlike water, oil may be flammable.
24:
25:
478:
326:BMW "Oilhead" motorcycle engines
263:
38:
49:needs additional citations for
437:
423:
398:
198:In the 1980s, Suzuki used the
13:
1:
391:
346:Royal Enfield Interceptor 650
240:
7:
369:
10:
483:
467:Engine lubrication systems
149:internal combustion engine
26:
166:
29:Lubrication oil cooling
462:Engine cooling systems
386:Full immersion cooling
177:oil circulation system
155:, typically a type of
365:Elsbett ELKO 3.82.92T
58:improve this article
444:Victory Motorcycles
331:Victory Motorcycles
173:motorcycle engines
351:Pulsar F250/ N250
134:
133:
126:
108:
16:(Redirected from
474:
446:
441:
435:
434:
431:"HKS 700 Engine"
427:
421:
420:
418:
417:
408:. Archived from
402:
129:
122:
118:
115:
109:
107:
66:
42:
34:
21:
482:
481:
477:
476:
475:
473:
472:
471:
452:
451:
450:
449:
442:
438:
429:
428:
424:
415:
413:
404:
403:
399:
394:
372:
309:Suzuki GSXR 750
295:
266:
243:
169:
130:
119:
113:
110:
67:
65:
55:
43:
32:
23:
22:
15:
12:
11:
5:
480:
470:
469:
464:
448:
447:
436:
422:
396:
395:
393:
390:
389:
388:
383:
378:
371:
368:
367:
366:
363:
358:
353:
348:
343:
338:
333:
328:
323:
317:
312:
306:
301:
294:
291:
290:
289:
286:
279:
276:
273:
270:
265:
262:
261:
260:
256:
253:
250:
247:
242:
239:
231:connecting rod
193:cylinder heads
168:
165:
153:heat-exchanger
139:is the use of
132:
131:
114:September 2018
46:
44:
37:
9:
6:
4:
3:
2:
479:
468:
465:
463:
460:
459:
457:
445:
440:
432:
426:
412:on 2016-05-02
411:
407:
401:
397:
387:
384:
382:
381:Water cooling
379:
377:
374:
373:
364:
362:
359:
357:
354:
352:
349:
347:
344:
342:
339:
337:
334:
332:
329:
327:
324:
321:
318:
316:
315:Suzuki FXR150
313:
310:
307:
305:
304:Wankel engine
302:
300:
297:
296:
287:
284:
283:specific heat
280:
277:
274:
271:
268:
267:
264:Disadvantages
257:
254:
251:
248:
245:
244:
238:
236:
232:
228:
224:
223:
218:
216:
212:
208:
207:Wankel engine
203:
201:
196:
194:
190:
189:shock cooling
185:
181:
178:
174:
164:
162:
158:
154:
150:
146:
142:
138:
128:
125:
117:
106:
103:
99:
96:
92:
89:
85:
82:
78:
75: –
74:
73:"Oil cooling"
70:
69:Find sources:
63:
59:
53:
52:
47:This article
45:
41:
36:
35:
30:
19:
439:
425:
414:. Retrieved
410:the original
400:
311:(1985 model)
220:
219:
204:
197:
186:
182:
170:
160:
159:known as an
136:
135:
120:
111:
101:
94:
87:
80:
68:
56:Please help
51:verification
48:
376:Air cooling
361:Citroën 2CV
341:Yamaha FZ25
222:Lubrication
137:Oil cooling
456:Categories
416:2014-09-08
392:References
241:Advantages
211:Mazda RX-7
161:oil cooler
141:engine oil
84:newspapers
18:Oil cooler
370:See also
336:Biscúter
299:HKS 700E
157:radiator
229:of the
227:big end
145:coolant
98:scholar
356:Ecotec
320:Kubota
259:occur.
235:piston
200:"SACS"
100:
93:
86:
79:
71:
167:Usage
143:as a
105:JSTOR
91:books
322:OC95
281:The
215:RX-8
213:and
205:The
77:news
60:by
458::
237:.
217:.
433:.
419:.
127:)
121:(
116:)
112:(
102:·
95:·
88:·
81:·
54:.
31:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.
