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2023年07月18日 イイね!

路面の細かい凹凸拾いがち

路面の細かい凹凸拾いがち結構長い登板となっていたセリカが整備入庫したので、ファミリーカーをハイゼット、私の相棒をQ5が務める体制となっています。
もともと優等生かつ調子良好でツッコむネタに困るQ5なのですが、粗を探してみると、路面のうねりや大きめの凹凸はスッといなすものの、細かい凸凹がある路面だとちょっとざらついた感触が出るようになってきたような気が。
これは多分タイヤだろうということで、タイヤ交換したいなぁという欲が出てきましたが、細かいこと言わなければ実用上問題ないので、年内いっぱいくらいをめどに交換するとして、しばらくタイヤ選びを楽しみたいと思います。
Posted at 2023/07/19 00:57:43 | コメント(0) | トラックバック(0) | Audi Q5 | クルマ
2023年06月13日 イイね!

VW/Audi EA888シリーズ

わが家のQ5にも載っている、VW/AuidiのEA888エンジンは、性能のバランスが良いおかげで?せいで? 独特の癖や変わった機構等々、マニア受けしそうな特徴はうすいので、解説記事等々があまり出ていないように思います。
よくまとまっていて概要をつかめる記事があったので、
訳そうかと思ったのですが、挫折しました。

Why The Volkswagen EA888 Is So Good

https://youtu.be/QzbHDp5tsZ0

https://www.motorreviewer.com/engine.php?engine_id=119

VW/Audi 2.0 TSI/TFSI EA888 Gen 1/2/3 Engine Specs, Problems & Reliability

<以下引用>
VW/Audi 2.0 TSI/TFSI EA888 Gen 1/2/3 Engine Specs, Problems & Reliability

The VW 2.0 TSI / TFSI EA888 is a 2.0-liter four-cylinder gasoline turbocharged engine based on the 1.8 TSI/TFSI of EA888 series. The production of the 2.0 TSI engine started in March 2008. It was released as a replacement for the 2.0 TSI engines of the previous EA113 family. Just like the 1.8 TSI engine, this two-liter version went through a series of changes during the production time. There are three generations of the last VW 2.0TSI engine.

2.0 TSI EA888 Gen 1
The 2.0TSI EA888/1 is known by following codes: CAWA, CAWB, CBFA, CCTA, and CCTB. Just like 1.8TSI, the 2.0l engine has a cast-iron cylinder block with the 88 mm (3.46 in) cylinder spacing and 220 mm height. The displacement growing was achieved by the new forged steel crankshaft with 92.8 mm (3.65 in) stroke while the bore size was kept the same. Also, the engine has the short connecting rods (144 mm) and other pistons lower the compression ratio to 9.6:1. The engine block is equipped with two chain-driven counter-rotating balance shafts.

The aluminum 16-valve cylinder head of 2.0TSI is similar to the 1.8TSI head. There are two intake and two exhaust valves per each cylinder. The intake valve diameter is 34.0 mm; the exhaust valve diameter is 28.0 mm; stem diameter for both valves is 6 mm. The valvetrain has low-friction roller finger cam followers and hydraulic tappets, for valve clearance compensation. The intake and exhaust camshafts are on top of the head and they are driven by the timing chain. The intake camshaft is equipped with the variable intake valve timing system. The 2.0 TSI Gen1 has direct fuel injection with homogeneous mixing. The low-pressure fuel pump mounted in a tank delivers fuel to the high-pressure pump supplying up to 190 bars (2,760 psi) of fuel pressure for the six-hole fuel injectors. The high-pressure injection pump is driven by a four-lobe cam on the exhaust camshaft. The engine also has the electronically controlled ignition with long-life spark plugs and four individual single spark coils.

The engine is turbocharged by the water-cooled and integrated into cast iron exhaust manifold turbocharger KKK K03 with the max boost pressure of 0.6 bar (8.7 psi). The compressed intake air goes through the plastic variable geometry intake manifold. The whole operation is controlled by ECU Bosch Motronic MED 17.5. The 2.0 TSI Gen1 with 2 lambda probe sensors meets the European emission standard Euro 4 (CAWB, CAWA engines) and ULEV 2 (CCTA, CCTB engines); CCTA version has 3 lambda probe sensors and meets the Californian SULEV standard.

2.0 TSI EA888 Gen 2
The 2.0TSI EA888/2 has appeared also in 2008 and had the same bunch of modifications as the 1.8 TSI Gen2. The main target was the friction reduction and efficient increasing. For this purpose, the diameter of the main journals was reduced by 6 mm (58 mm to 52 mm). Also, the low-friction thin pistons rings, new pistons and a new method for cylinder wall surface manufacturing were applied. This generation has a variable oil pump. In addition to that, the 2.0TFSI engines for Audi applications were equipped with AVS system (CCZA, CCZB, CCZC, and CCZD engines). It is a two-stage intake valve-lift control. The system varies the valve lift in two stages: 6.35 mm and 10 mm after 3,100 rpm.

The 2.0 EA888/2 meets the higher emission standards comparing to EA888/1 - Euro5 (CDNC engine) and ULEV 2 (CAEB engine). The production of these engines continued until 2015.

2.0 TSI EA888 Gen 3
The 2.0TSI EA888/3 or Gen3 was designed to be lighter and more efficient. First of all, the engine got a new cast iron cylinder block with thinner walls by 0.5 mm (3 mm instead of 3.5). There are new steel crankshaft, pistons and rings, oil pump and light-weight balancing shafts. The new engine design incorporates an entirely redeveloped cylinder head. It is a 16-valve aluminum DOHC cylinder head with an integrated and water-cooled exhaust manifold. Like before, the camshafts are driven by the timing chain and AVS system is applied for the intake valves only. But the variable valve timing system is available for both camshafts.

The 2.0TSI EA888/3 is equipped with dual injectors. One set is mounted in the port (MPI) and another set is inside the cylinders (direct injection), for that extra efficient power when needed. The max boost was increased up to 1.3 bar (18.8 psi). It became possible by installing the new turbocharger (IHI IS20) with a new electronic wastegate, which adjusted the boost pressure. The CULA, CULB, CULC, CPLA, and CPPA versions are equipped with a smaller and less powerful turbocharger - Garrett MGT 1752S.

For high-performance vehicles, the engineers did some improvements in the design. The engines with code CJX have slightly different cylinder head shape, performance intake camshaft, bigger exhaust valves, reduced compression ration to 9.3:1, new pistons, more productive injectors, and high-pressure fuel pump. The engines are turbocharged by IHI IS38 with the max boost of 1.2 bar (17.4 psi). More powerful versions come with a big air-to-air intercooler.

The Gen3 engines are equipped with Siemens Simos 18.1 electronic engine control unit (ECU). The upgraded 2.0 TSI EA888/3 corresponds to the latest emissions regulations such as Euro 6 for the European market.


Engine Specs
Manufacturer Volkswagen AGProduction years 2008-present dayCylinder block material Cast IronCylinder head material AluminumFuel type GasolineFuel system Direct injection;
Direct injection + multi-point injection for Gen 3Configuration InlineNumber of cylinders 4Valves per cylinder 4Valvetrain layout DOHCBore, mm 82.5 mm (3.25 in)Stroke, mm 92.8 mm (3.65 in)Displacement, cc 1,984 cc (121.1 cu in)Type of internal combustion engine Four-stroke, turbochargedCompression Ratio 9.6:1Power, hp 170-310 hp (125-228kW)/ 4,300-5,900Torque, lb ft 207-280 lb-ft (280-380 Nm)/ 1,500-5,500Engine weight -Firing order 1-3-4-2Engine oil weight VW 504.00; SAE 5W-30, 5W-40Engine oil capacity, liter 4.6 - Gen 1, 2;
5.7 (6.0 qts) - Gen 3Oil change interval, mile 9,000 (15,000 km) or 12 monthApplications VW Golf 5 GTI, Golf 6 GTI, Golf 7 GTI/7R,Volkswagen Jetta GLI, VW Passat B6/B7/B8, VW Passat CC, VW Tiguan, VW Amarok, VW Beetle, VW Eos, VW Scirocco, VW Sharan/SEAT Alhambra, VW T6/California, Audi A4, Audi A5, Audi A6, Audi S3, Audi Q5, Audi A1, Audi TT/TTS, Audi Q2, Audi Q3, Audi Q7, Skoda Octavia RS, Skoda Superb, Skoda Kodiaq, SEAT Leon Cupra, SEAT Altea, SEAT Leon

2.0 TSI EA888 Engine Problems and Reliability
It may seem strange but all the main problems were inherited from the 1.8TSI EA888 engine without any changes in the worse or better direction. There are problems with stretched timing chain, high oil consumption, carbon deposit inside ports and on intake valves. You can read detailed information about common problems for each generation in this review for the 1.8TSI/TFSI EA888.

But everything is fixable. The cast iron engine block is rebuildable, solutions for fixing common problems are already found and replacement parts are not very expensive. Pour the high-quality engine oil, feed with minimum 95 RON gasoline, follow the maintenance schedule precisely and the engine will last for about 150-200k miles (250,000-300,000 km). The engine longevity doesn't drop down after Stage 1 (ECU remapping) and even after Stage 2 (downpipe, more productive turbocharger, and ECU remap) depends on how much power you will get. But of course, Stage 3 will reduce the reliability significantly.

Modifications
CAWA - 125 kW (170 hp) at 4,300-6,000 rpm, 207 lb-ft (280Nm) at 1,700-5,000 rpm. This is engine for the VW Tiguan.
CCZC - 125 kW (170 hp) at 4,300-6,200 rpm, 207 lb-ft (280Nm) at 1,500-4,200 rpm. Application: VW Tiguan, Audi Q3.
CCZD - 132 kW (178 hp) at 4,500-6,200 rpm, 207 lb-ft (280Nm) at 1,700-4,500 rpm - another engine for the VW Tiguan.
CCTA/CBFA - 147 kW (200 hp) at 5,100-6,000 rpm, 207 lb-ft (280Nm) at 1,800-5,000 rpm. Application: VW Golf Mk5 GTI (for US market only), VW Golf Mk6 GTI (for US market only), Audi Q3 (for US market only), VW Jetta Mk5/Mk6, VW Passat B6, VW CC, Audi A3 (8P).
CAWB/CCZA - 147 kW (200 hp) at 5,100-6,000 rpm, 207 lb-ft (280Nm) at 1,700-5,000 rpm. Application: Audi A3 Cabriolet, VW Scirocco, VW Tiguan, Audi TT, Skoda Superb Mk2 (3T), Skoda Octavia.
CPSA - 155 kW (211 hp) at 5,000-6,200 rpm, 221 lb-ft (300Nm) at 1,800-4,900 rpm. The engine version is for Audi Q3.
CCZB - 155 kW (211 hp) at 5,300-6,200 rpm, 207 lb-ft (280Nm) at 1,700-5,200 rpm. The engine was installed in VW Golf Mk6 GTI, VW Scirocco, VW Passat B6, VW CC, VW Tiguan, SEAT Altea Freetrack, SEAT Leon FR.
CAEA/CDNB - 132 kW (179 hp) at 4,200-6,000 rpm, 236 lb-ft (320Nm) at 1,500-4,000 rpm. Application: Audi A4 (B8), Audi Q5, Skoda Kodiaq.
CAEA/CAEB/CDNC - 155 kW (211 hp) at 4,300-6,000 rpm, 260 lb-ft (350Nm) at 1,500-4,200 rpm. Application: Audi A4 (B8), Audi A5, Audi Q5, SEAT Exeo.
CAEA/CAEB/CDNC - 155 kW (211 hp) at 4,300-6,000 rpm, 258 lb-ft (350Nm) at 1,600-4,200 rpm. It is Audi TT Mk2 engine.
CHHB - 162 kW (220 hp) at 4,500-6,200 rpm, 258 lb-ft (350Nm) at 1,500-4,000 rpm. Application: VW Golf Mk7 GTI, VW Tiguan 2, Audi A3, Skoda Superb, Skoda Octavia RS.
CNCD - 165 kW (224 hp) at 4,500-6,250 rpm, 258 lb-ft (350Nm) at 1,500-4,500 rpm - Audi Q5 engine.
CHHA - 169 kW (230 hp) at 4,700-6,200 rpm, 258 lb-ft (350Nm) at 1,500-4,600 rpm. The engine can be found under a hood of VW Golf Mk7 GTI Performance and Skoda Octavia RS230.
CJXE - 195 kW (265 hp) at 5,350-6,600 rpm, 258 lb-ft (350Nm) at 1,500-4,000 rpm - high-performance engine for the SEAT Leon Cupra.
CJXA/CJXB - 206 kW (280 hp) at 5,100-6,500 rpm, 280 lb-ft (380Nm) at 1,800-5,500 rpm. Application: SEAT Leon Cupra, Skoda Superb.
CJXD - 213 kW (290 hp) at 5,900-6,400 rpm, 258 lb-ft (350Nm) at 1,700-5,800 rpm - one more high-performance engine for the SEAT Leon Cupra.
CYFB - 215 kW (292 hp) at 5,400 rpm, 280 lb-ft (380Nm) at 1,800 rpm. Application: VW Golf Mk7 R for the North American market.
CJXC - 221 kW (300 hp) at 5,500-6,200 rpm, 280 lb-ft (380Nm) at 1,800-5,500 rpm. Application: European VW Golf Mk7 R, Audi S3, SEAT Leon Cupra.
CJXG - 228 kW (310 hp) at 5,500-6,200 rpm, 280 lb-ft (380Nm) at 1,800-5,500 rpm - the most powerful version available for Audi TTS.

<引用終わり>
Posted at 2023/06/13 22:19:34 | コメント(1) | トラックバック(0) | Audi Q5 | クルマ
2023年06月07日 イイね!

こまめで律儀なシフトチェンジ


今週の主力機はQ5です。
初代の前期型なので、7速DCT搭載です。
発進してすぐパパパッとシフトアップして、
負荷に応じて効率のよさそうな回転域を選んでくれます。
丁度最大トルクが出始める1300回転あたりを下回らないように
こまめにシフトチェンジしていてターボラグが出にくく、
アクセルを踏んだらすぐにレスポンスするのが心地よいです。
自分で手動変速であればそこまでこまごまとシフトチェンジはしないだろうなと思うレベルで真面目にシフトチェンジしてくれるのがなんだか健気な感じです。

Posted at 2023/06/09 00:20:27 | コメント(0) | トラックバック(0) | Audi Q5 | クルマ
2023年06月04日 イイね!

久しぶりの洗車日和!


日中は気温が高かったのですが、夕方には涼しくなってきて、桜島の灰も今日の風向きなら問題なし!ということで、E60→ムスタング→Q5の順で洗車できました。
連投のE60がブレーキダストや虫や・・・でかわいそうなことになっていたのですっきりしてなによりでした。
ムスタングとQ5は主に駐車場でつもった埃なので割と楽でしたが、車の移動のついでに火山灰が薄くつもった駐車場の掃除もしてむしろそちらに体力を奪われるのはいつものごとくでした。
割ときれいだったセリカ・Z3・ハイゼットは今回手つかずだったので、こちらも早めに洗いたいところです。
Posted at 2023/06/05 01:40:08 | コメント(0) | トラックバック(0) | Audi Q5 | クルマ
2023年02月10日 イイね!

整備待ち続々解消の流れへ!

整備待ち続々解消の流れへ!全愛車が入庫中か整備待ちだった数日前でしたが、昨日今日で大きく動いて続々と解決していきそうです。
まずは本日、Q5の一年点検が無事終了して、いつものことながら問題個所は無く、オイル等々の消耗品交換とタイヤローテーションくらいでOK。
約一か月の入庫となったハイゼットも明後日には帰宅可に。
セリカのUSBケーブルも届いて、こちらはパーツ待ち状態解消。
Z3は入庫したばかりなのでしばらく待ち。
ムスタングは一年点検時期が来るのであわせてオイル交換等々の予定ですが、日程すり合わせで来ていないので、なんだかんでムスタングの整備が手つかず状態になっています。来週中に日取りを決めなくてはと思っているところです。
状態は良いのですがダラダラ延期になってはマズイですね。
Posted at 2023/02/10 22:18:47 | コメント(0) | トラックバック(0) | Audi Q5 | クルマ

プロフィール

「@34Kouki 吸気配管は問題ないですか?」
何シテル?   06/24 21:09
M.Naganoです。 子供の頃大好きだったうちの車がサニークーペだった流れで、今でもクーペ好きです。多少の不便は・・・・気にしない気にしない。

ハイタッチ!drive

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ひとつ、また経験値が上がった…かな? 
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ホンダがVTECを止める時は来るのか?。 
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