V-type multi-cylinder engines — typical bank angle In most common automotive 'V' engines, the two rows (banks) of cylinders are typically arranged at which bank angle for smooth operation and packaging?

Introduction / Context:
The bank angle in a V-type engine is the included angle between the two cylinder banks. It influences primary and secondary balance, firing intervals, engine height/width, and the feasibility of even firing without split-pin crankshafts.

Given Data / Assumptions:

• General question about typical V-engine practice, not a specific V6 or narrow-angle variant.
• Many classic V8 engines adopt a right-angle configuration.
• Even firing and balance considerations are key selection factors.

Concept / Approach:
While some V6 engines commonly use 60° for compactness and smoother firing, the widely recognized and historically standard bank angle for V8 engines is 90°. The question asks for a general typical arrangement in V-engines, and 90° is the conventional textbook answer, especially for V8 designs that dominate many applications.

Step-by-Step Solution:
Identify common architectures: V8 → 90°, V6 → 60° (common), narrow-angle V → smaller angles.Select the best-known general angle for V-type engines across classic designs.Answer: 90°.

Verification / Alternative check:
Automotive engineering texts cite 90° as the standard for conventional cross-plane V8 for balance and even firing with shared crank pins.

Why Other Options Are Wrong:
45° is too narrow for most V layouts.

60° is common for V6, but the question is general; 90° is more broadly cited.

130° is excessively wide for typical vehicle engines and used rarely.

Common Pitfalls:
Assuming one angle fits all V engines; engineers choose angle based on cylinder count, firing order, and packaging. However, for a general exam context, 90° is the standard reference.

Final Answer:
90°