FC01 Shailendra Gaur's Six-Stroke Engine

Shailendra Gaur's Six-Stroke Engine Claims

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Executive Summary

Shailendra Kumar Singh Gaur, a science graduate from Prayagraj, claims to have developed a revolutionary six-stroke engine achieving 176-200 km/L fuel efficiency after 18 years of research. This fact-check analyzes his claims against scientific literature, patent references, and thermodynamic principles.

Verdict: PARTIALLY PLAUSIBLE WITH SIGNIFICANT CAVEATS - While six-stroke engines are scientifically valid and efficiency improvements are possible, Gaur's specific claims require contextual interpretation and independent verification.

Key Claims Analysis

CLAIM 1: 176-200 km/L Fuel Efficiency

Media Reports State:

Daily Jagran

"His prototype achieved over 176 kilometers per litre on a 100cc bike... with additional funding, it could reach over 200 kilometres per litre"

Hindustan Times

"A 2017-model TVS motorcycle with a 100cc engine... ran for 35 minutes on just 50 ml of gasoline"

FACT-CHECK: NEEDS CONTEXT - POTENTIALLY MISLEADING

Baseline Context Analysis

graph TD
    A[2017 TVS 100cc] --> B[50ml Petrol]
    B --> C[35 Minutes Runtime]
    C --> D[176 km/L Claimed]
    
    style A fill:#f9f,stroke:#333,stroke-width:2px
    style D fill:#9f9,stroke:#333,stroke-width:2px

2017 TVS 100cc Motorcycle Specifications:

Efficiency Calculation Context:
If the baseline 2017 TVS achieved only 40-50 km/L (due to age/wear), then:

Scientific Evidence Context:

Four-stroke engine cycle animation

4-Stroke-Engine-with-airflows_numbers.gif

CLAIM 2: "70% Energy Utilization" Clarification

Media Reports State:

"capable of using about 70 percent of energy"

FACT-CHECK: INTERPRETATION MATTERS

Thermodynamic Reality Check

Carnot Limit

Pasted image 20250830190328.png

Efficiency Bounds:

Possible Interpretations:

Option A: Absolute Efficiency (Problematic)

Carnot Efficiency Limit Maximum theoretical efficiency for IC engines: ~60% Current best production engines: 40-50%

Option B: Relative Improvement (Plausible)

The "70% Efficiency" Mystery Likely means "70% MORE efficient" not "70% absolute efficiency"

25% ร— 1.7 = 42.5% efficiency - Thermodynamically possible

Option C: Efficiency vs. Aged Baseline (Most Likely)

Critical Discovery

Baseline Matters! 2017 TVS 100cc Original Specs:

  • New efficiency: 67-70 km/L
  • After 8 years: Likely degraded to 40-50 km/L

graph LR
    A[Degraded Baseline
40-50 km/L] --> B[Gaur's Result
176 km/L]
    A --> C[3.9x Improvement]
    
    D[Original Specs
67-70 km/L] --> B
    D --> E[2.6x Improvement]
    
    style A fill:#ffcccc
    style B fill:#ccffcc
    style C fill:#ffffcc
    style E fill:#ffffcc

Recalculating Gaur's Claims:

CLAIM 3: "Six-Stroke Engine" Technology

Media Reports State:

"After an incredible 18 years of relentless hard work, he has successfully created a six-stroke engine"

FACT-CHECK: PARTIALLY TRUE

Patent Analysis Correlation:

timeline
    title Patent Timeline & Gaur's Development
    
    2011 : WO2011074002A1
         : Offset Piston System
         : Claims dramatic efficiency
    
    2018 : WO2018122876A1
         : TDC Dwell Mechanism
         : "60 degrees adjustment"
    
    2025 : Shailendra Gaur Claims
         : "Adjusted to 60 degrees"
         : 176 km/L efficiency

WO2018122876A1 (TDC Dwell System):

WO2011074002A1 (Offset Piston System):

Academic Six-Stroke Research Results

Recent studies (2019-2024) show documented improvements:

Parameter Four-Stroke Six-Stroke Improvement
Thermal Efficiency 36.6% 51.5% +40.8%
Brake Power Baseline +33.1% +33.1%
BSFC Baseline -16% -16%
NOx Emissions Baseline -55% -55%

Source: ResearchGate - Six-Stroke Engine Studies

Historical Six-Stroke Examples

Successful Implementations:
Pasted image 20250830185633.jpg

Failed/Abandoned Examples:

True Six-Stroke Engine Concepts:

Porche 6 stroke design

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Key Scientific Finding Six-stroke engines can achieve 40-50% thermal efficiency vs. 25-35% for conventional engines

Academic Six-Stroke Designs:

Water Injected 6 Stroke design

Pasted image 20250830185305.jpg

Key Scientific Finding Six-stroke engines can achieve 40-50% thermal efficiency vs. 25-35% for conventional engines

CLAIM 4: "Almost Zero Pollution"

Media Reports State:

"Almost Zero Pollution โ€” A giant leap for sustainability"
"Carbon monoxide and other harmful gases originate in almost negligible amounts"

FACT-CHECK: EXAGGERATED BUT DIRECTIONALLY CORRECT

Scientific Evidence:

Patent Reference:
WO2011074002A1 claims: "substantially the emission of hazardous gases as carbon mono oxide etc" - consistent with research findings.

Independent Verification Status

Testing and Documentation

โŒ No independent automotive testing agency verification
โŒ No peer-reviewed publications
โŒ No standardized fuel economy testing (SAE/ISO protocols)
โŒ No third-party emissions testing
โŒ No durability or reliability testing

Media Coverage Analysis

โœ… Multiple Indian media outlets covering story
โš ๏ธ All reports based on inventor's claims, not independent testing
โš ๏ธ No technical journalists with engineering background involved
โš ๏ธ Social media amplification without technical scrutiny

Contextual Assessment Framework

Plausibility Analysis

VERDICT: CAUTIOUSLY OPTIMISTIC
pie title Assessment Breakdown
    "Likely True" : 40
    "Needs Verification" : 35
    "Questionable" : 25

What's Likely True:

What Needs Clarification & Verification:

What Remains Questionable:

Recommendations and Conclusions

Final Takeaway

Key Insight "Context matters enormously - what seemed impossible becomes plausible when you understand the baseline and interpret claims correctly."
graph TD
    A[Extraordinary Claims] --> B{Proper Context?}
    B -->|Yes| C[Potentially Valid]
    B -->|No| D[Likely Invalid]
    C --> E[Requires Verification]
    D --> F[Dismiss or Recontextualize]
    
    style A fill:#ffcccc
    style C fill:#ccffcc
    style E fill:#ffffcc

For Media and Public:

  1. Interpret efficiency claims contextually - consider baseline conditions
  2. Demand independent testing by recognized automotive agencies
  3. Understand relative vs. absolute efficiency improvements
  4. Apply informed skepticism while remaining open to innovation

For Technical Community:

  1. Offer standardized testing collaboration if claims are genuine
  2. Provide educational context about thermodynamic limits
  3. Encourage proper scientific methodology for validation

For Potential Stakeholders:

  1. Require third-party verification under standardized conditions
  2. Assess claims within thermodynamic possibility bounds
  3. Consider age and condition of baseline test vehicle
  4. Evaluate patent correlation and technical feasibility

References and Sources

News Articles and Media Coverage

Primary News Sources:

Social Media Coverage:

Patent Documents

Referenced Patents:

Academic and Technical Sources

Six-Stroke Engine Research Papers:

Engine Efficiency and Thermodynamics:

Baseline Vehicle Specifications

TVS Motorcycle Data:

Technical Resources and Animations

Educational Content:

Six-Stroke Concepts:

Recent Developments and Context

Modern Six-Stroke Research:

Automotive Industry Analysis

Technical Standards and Testing:

Comparative Research:

Methodology Note

This fact-check was compiled using:

All sources were accessed between August-September 2025, with publication dates ranging from 2009 to present.

Last Updated: August 2025