JP6483654B2 - 車両の冷却装置 - Google Patents
車両の冷却装置 Download PDFInfo
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- JP6483654B2 JP6483654B2 JP2016242720A JP2016242720A JP6483654B2 JP 6483654 B2 JP6483654 B2 JP 6483654B2 JP 2016242720 A JP2016242720 A JP 2016242720A JP 2016242720 A JP2016242720 A JP 2016242720A JP 6483654 B2 JP6483654 B2 JP 6483654B2
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- temperature
- cooling water
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- cooling
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- 238000001816 cooling Methods 0.000 title claims description 175
- 239000000498 cooling water Substances 0.000 claims description 313
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 57
- 230000001105 regulatory effect Effects 0.000 claims description 36
- 238000011144 upstream manufacturing Methods 0.000 claims description 24
- 239000002826 coolant Substances 0.000 claims description 12
- 230000001276 controlling effect Effects 0.000 claims description 4
- 238000007726 management method Methods 0.000 description 25
- 238000001514 detection method Methods 0.000 description 12
- 238000012986 modification Methods 0.000 description 11
- 230000004048 modification Effects 0.000 description 11
- 238000002485 combustion reaction Methods 0.000 description 8
- 239000000446 fuel Substances 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000005338 heat storage Methods 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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Description
また、上記の構成によれば、冷却水導入通路には、低温系冷却回路に導入される高温系冷却水の流量を調整するための複数の調整弁が、複数の低温系デバイスにそれぞれ対応するように設けられているので、各調整弁によって、それに対応する低温系デバイスを通る低温系冷却水への高温系冷却水の混入量を調整することができる。これにより、各低温系デバイスを通る低温系冷却水を、その低温系デバイスの冷却に適した温度に調整し、低温系デバイスに通すことにより、複数の低温系デバイスをそれぞれ適切に冷却することができる。
また、上記の構成によれば、目標温度設定手段により、複数の低温系デバイスごとに、それらの管理温度としての目標温度がそれぞれ設定される。また、高温系デバイスと熱交換した冷却水の温度を高温系冷却水温として、低温系ラジエータに放熱した冷却水の温度を低温系第1冷却水温として、複数の低温系デバイスと熱交換させる冷却水のそれぞれの温度を低温系第2冷却水温として検出するとともに、複数の低温系デバイスに応じ、対応する複数の低温系ポンプによる冷却水のそれぞれの送出し量を低温系冷却水送出し量として設定する。そして、上記の検出された高温系冷却水温及び低温系第1冷却水温、並びに設定された低温系冷却水送出し量に応じ、複数の低温系デバイスごとの低温系第2冷却水温が、複数の低温系デバイスごとの設定された目標温度になるよう、低温系冷却回路に導入すべき高温系冷却回路の冷却水の流量(以下「高温系冷却水導入量」という)をそれぞれ算出し、これらの算出した高温系冷却水導入量に応じて、複数の調整弁の開度をそれぞれ制御する。
後述するように、上記の高温系冷却水導入量は、上述した高温系冷却水温、低温系第1冷却水温、低温系冷却水送出し量、及び目標温度に基づき、適切に算出することができる。したがって、算出された高温系冷却水導入量に応じて、各調整弁の開度を調整することにより、複数の低温系デバイスにそれぞれ、適切な温度に調整された低温系冷却水を通すことができる。その結果、複数の低温系デバイスを、それぞれの管理温度に適切に冷却することができる。
TMIX×QEWP=TWE×QVLV+TWSR×(QEXP−QVLV)…(1)
TMIX:高温系冷却水を低温系冷却水に混入した混合冷却水の温度
QEWP:電動ポンプによる冷却水の送出し量(以下「ポンプ流量」という)
TWE :高温系冷却水温
QVLV:調整弁を通過する高温系冷却水の流量(以下「バルブ流量」という)
TWSR:サブラジエータ水温
QVLV=(TMIX−TWSR)/(TWE−TWSR)×QEWP…(2)
2 ECU(目標温度設定手段、低温系冷却水送出し量設定手段、
高温系冷却水導入量算出手段、調整弁制御手段及びポンプ制御手段)
3 内燃機関
3a エンジン本体(高温系デバイス)
4 インタークーラ(低温系デバイス)
5 高圧バッテリ(低温系デバイス)
6 PCU(低温系デバイス)
10 高温系冷却回路
11 メインラジエータ(高温系ラジエータ)
12 冷却水通路(高温系冷却水通路)
12a バイパス通路(高温系ラジエータバイパス通路)
12b 調整弁付きバイパス通路(高温系ラジエータバイパス通路)
13 冷却水ポンプ(高温系ポンプ)
14 サーモスタット(調整弁)
15 エンジン水温センサ(高温系冷却水温検出手段)
20 低温系冷却回路
21 サブラジエータ(低温系ラジエータ)
22 冷却水通路(低温系冷却水通路)
23A インタークーラ冷却用の電動ポンプ(低温系ポンプ)
23B 高圧バッテリ冷却用の電動ポンプ(低温系ポンプ)
23C PCU冷却用の電動ポンプ(低温系ポンプ)
24 サブラジエータ水温センサ(低温系第1冷却水温検出手段)
25 インタークーラ水温センサ(低温系第2冷却水温検出手段)
26 高圧バッテリ水温センサ(低温系第2冷却水温検出手段)
27 PCU水温センサ(低温系第2冷却水温検出手段)
31 冷却水導入通路
32 冷却水戻り通路
33A インタークーラ用の調整弁(調整弁)
33B 高圧バッテリ用の調整弁(調整弁)
33C PCU用の調整弁(調整弁)
41 第2実施形態の冷却装置
42 調整弁
43 冷却水送り通路(低温系冷却水通路)
44 冷却水戻り通路(低温系冷却水通路)
45 メインラジエータ水温センサ
51 第1変形例の冷却装置
61 第2変形例の冷却装置
71 第3変形例の冷却装置
QEWP ポンプ流量(低温系冷却水送出し量)
QVLV バルブ流量(冷却水の導入量)
TWE エンジン水温(高温系冷却水温)
TWSR サブラジエータ水温(低温系第1冷却水温)
TWIC インタークーラ水温(低温系第2冷却水温)
TWBT 高圧バッテリ水温(低温系第2冷却水温)
TWPC PCU水温(低温系第2冷却水温)
TWMR メインラジエータ水温
Claims (3)
- 冷却を要する複数のデバイスをそれぞれ所定の温度に管理するために冷却する車両の冷却装置であって、
前記複数のデバイスのうち管理すべき温度が最も高い高温系デバイスと、高温系ラジエータと、当該高温系デバイスと当該高温系ラジエータに接続され、これらの間で冷却水を循環させるための高温系冷却水通路と、当該高温系冷却水通路に冷却水を送り出し、循環させるための高温系ポンプと、を有する高温系冷却回路と、
前記複数のデバイスのうち前記高温系デバイス以外の複数の低温系デバイスと、単一の低温系ラジエータと、当該複数の低温系デバイスと当該低温系ラジエータに接続され、これらの間で冷却水を循環させるとともに当該複数の低温系デバイスを互いに並列に接続する低温系冷却水通路と、前記複数の低温系デバイスごとに設けられ、前記低温系冷却水通路に冷却水を送り出し、循環させるための複数の低温系ポンプと、を有する低温系冷却回路と、
前記高温系冷却回路と前記低温系冷却回路の間に接続され、前記高温系冷却回路の冷却水を、前記低温系冷却回路における前記複数の低温系デバイスと前記低温系ラジエータの間にかつ当該複数の低温系デバイスのそれぞれの上流側に導入するための冷却水導入通路と、
前記冷却水導入通路において前記複数の低温系デバイスにそれぞれ対応するように設けられ、前記低温系冷却回路に導入する前記高温系冷却回路の冷却水の流量を調整するための複数の調整弁と、
を備え、
前記複数の調整弁はそれぞれ、開度が調整可能に構成されており、
前記複数の低温系デバイスの目標温度をそれぞれ設定する目標温度設定手段と、
前記高温系デバイスと熱交換した冷却水の温度を、高温系冷却水温として検出する高温系冷却水温検出手段と、
前記低温系ラジエータに放熱した冷却水の温度を、低温系第1冷却水温として検出する低温系第1冷却水温検出手段と、
前記複数の低温系デバイスと熱交換させる冷却水のそれぞれの温度を、低温系第2冷却水温として検出する低温系第2冷却水温検出手段と、
前記複数の低温系デバイスに応じ、対応する前記複数の低温系ポンプによる冷却水のそれぞれの送出し量を、低温系冷却水送出し量として設定する低温系冷却水送出し量設定手段と、
前記検出された高温系冷却水温及び低温系第1冷却水温、並びに前記設定された低温系冷却水送出し量に応じ、前記複数の低温系デバイスごとの前記低温系第2冷却水温が、当該複数の低温系デバイスごとの前記設定された目標温度になるよう、前記低温系冷却回路に導入すべき前記高温系冷却回路の冷却水の導入量をそれぞれ算出する高温系冷却水導入量算出手段と、
当該算出された冷却水の導入量に応じて、前記複数の調整弁の開度をそれぞれ制御する調整弁制御手段と、
をさらに備えていることを特徴とする車両の冷却装置。 - 前記冷却水導入通路は、前記高温系冷却回路側の端部が前記高温系冷却水通路における前記高温系デバイスの下流側かつ前記高温系ラジエータの上流側に接続されていることを特徴とする請求項1に記載の車両の冷却装置。
- 前記低温系冷却水送出し量設定手段は、前記複数の低温系デバイスのそれぞれの放出熱量に応じて、当該複数の低温系デバイスごとの前記低温系冷却水送出し量をそれぞれ設定するように構成されており、
当該設定された低温系冷却水送出し量をそれぞれ送り出すよう、前記複数の低温系ポンプをそれぞれ制御するポンプ制御手段を、さらに備えていることを特徴とする請求項1又は2に記載の車両の冷却装置。
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