📅 Published: 2025-04-18
📘 Source: Biaoxue Magazine – Japanese Car Enthusiasts Club

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🧠 Brake System is an indispensable and independent system in all automobiles.
Why emphasize “independent”? Because it concerns active safety—brakes must function even if the engine or transmission fails. 🔧

👻 Remember that “brake failure due to cruise control glitch” rumor?
Total nonsense or just a fame-hungry stunt. Modern brake systems being controlled by computers? ❌ Not legally allowed.

🛑 A car’s brake system is fully self-operating and not about R&D limitations.
International law currently forbids any drive-by-wire (electronic-only) tech in brake systems. So next time someone blames cruise control for no brakes… 🤔 Don’t be fooled.

📐 Brake Physics 101

Let’s simplify:

• E = mv² / 2 → Kinetic energy (E)

• W = μmgd → Braking work (W)

These show: the heavier or faster a car, the more stopping power you need.
Brakes = energy converters. 🔥

💬 So no, power ≠ brake size.
Brake kits depend on weight and tire grip. A 1-ton car doesn’t need 380mm rotors. 🧱

🏛️ Where Did Brakes Come From?

The earliest brake system was mechanical friction using wood or leather against wheels.
In 1820, Karl von Drais invented the first pad.
In 1888, Bertha Benz had a cobbler make brake pads from cowhide mid-trip 🐮—that’s why we say “brake leather” today!

With inflatable tires, wheel-friction braking stopped being practical.
Inspired by bicycle tech 🚴, disc brakes and drum brakes arrived.

🚗 In the early 1900s, all cars were rear-wheel drive, and only rear wheels had brakes.
Until 1924—when Horch 10M25 became the first four-wheel brake car! 👑

🧲 Later, electric and magnetic brakes appeared (non-friction),
but every EV still requires traditional hydraulic brakes today due to legal + safety constraints.

🛠️ Drum vs Disc: Which is Better?

👀 Many think drum = outdated. But wrong!
Drum brakes are stronger in handbrake use, better sealed, less dusty, and more durable.

But…

• ❌ Harder to cool

• ❌ Harder to replace

• ❌ Dangerous if used in front wheels—common pre-1970s 😨

💿 Disc brakes were patented in the 1890s (USA/UK).
Though patented in 1902 by Lanchester, they weren’t practical until the 1950s due to reliability and dust issues.
🌪️ The game-changer? 1953 Jaguar XK120-C, winning Le Mans with 4-disc brakes!

💥 In 1955, Citroën DS19 introduced front disc brakes to mass production.
To prevent damage, they mounted them inboard, on the transmission—ingenious!
They even added ducts to blow air on them 😮💨.

🇬🇧 British Jensen 541 (1956) became the first car with 4 disc brakes.
The Jensen FF (1966) was the first AWD + ABS sedan—way before Audi! 🏁

💡 The Birth of Hydraulic Brakes

The first hydraulic brake car:
🏎️ 1921 Duesenberg Model A (race car)
🚘 1924 Chrysler B70 was the first mass-produced hydraulic brake car—sold 100,000+ units.

Even so, cable brakes dominated till the 1960s. (VW Beetle used them until 1962!)

🧠 ABS Timeline (Don’t Let Bosch Take All the Credit!)

• 1903 – Frenchman Paul Hallot patents mechanical “brake regulator” 🚂

• 1928 – German Karl Waessel defines car ABS principles

• 1936 – Bosch patents “ABS”, still mechanical

• 1966 – Jensen FF uses mechanical ABS by Dunlop-Maxaret

• 1969 – ITT introduces electronic ABS (on Concorde ✈️)

• 1971 – Nissan President debuts EAL system (electronic assist)

• 1971 – Italian engineer Mario Palazzetti invents modern electronic ABS 🧑🔬

• 1978 – Bosch markets it under the “ABS” name.
  ✅ Mercedes W116 = first ABS car

📌 Note: Bosch bought the patent, didn’t invent ABS!

🧩 Later systems like EBV, ESC, etc., all build on the brake foundation.
But per regulation, these must not override the core brake system.
They’re helpful, but not mandatory. If they fail, your brakes must still work. 🧯

🔧 Thinking of Upgrading?

Forget marketing hype.

Understand this:

• Car weight

• Speed (energy)

• Tire grip
  👇
  Then match the brake kit to your actual needs—not brand prestige.

🧠 Knowledge = power. Next time, you’ll say, “Don’t water me down—I understand brakes.”

📚 Next Episode
We’ll help you plan your brake system upgrade like a pro. Stay tuned! 👨🔧