Source: https://guthlabs.ai/docs/instruments/diesel-cycle-efficiency-calculator/implementation/

instrument implementation / implementation-contract

# Diesel Cycle Efficiency Calculator implementation

A source-bound implementation contract for Diesel Cycle Efficiency Calculator; deployment and executable qualification remain separate.

Status: **VERIFIED_CLEAN**Lifecycle: **implementation-contract**

## Binding contract

This record describes what an executable surface must bind and validate. It does not claim that a public calculator, package, or production route is deployed.

**Record owner**: Guth Instruments

**Lifecycle**: verified-clean

**Evidence ID**: t3-012

**Effect**: Computation or source lookup only

## Input and validation requirements

The specification does not define net work because heat input, mass, and normalization are missing. It also permits singular or nonphysical inputs unless it explicitly rejects rc=1, rc<1, and r<=1; rc=1 produces a direct 0/0 evaluation.

## Required corrections

No binding erratum is attached to this unique-name record. Implementers must still preserve the declared units, domain, and failure behavior.

## Inspectable interface fixture

The sample below is evidence for interface and validation tests, not a production implementation.

````
{
  "inputs": {
    "r": 16,
    "rc": 2,
    "gamma": 1.4
  },
  "expected_outputs": {
    "eta": 0.613805,
    "net_work": null
  },
  "working": "r^(γ−1) = 16^0.4 ≈ 3.031433, so 1/r^(γ−1) ≈ 0.329877. rc^γ = 2^1.4 ≈ 2.639016. [rc^γ−1]/[γ(rc−1)] = (2.639016−1)/(1.4×1) = 1.639016/1.4 ≈ 1.170726. η = 1 − (0.329877×1.170726) = 1 − 0.386195 ≈ 0.613805. Net work cannot be computed from the supplied inputs."
}
````

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/diesel-cycle-efficiency-calculator/>)[02**Mechanism**](<https://guthlabs.ai/docs/instruments/diesel-cycle-efficiency-calculator/mechanism/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/diesel-cycle-efficiency-calculator/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `evidence-tranche3/tranche3-results.json`