aid: clearflame-engines
name: ClearFlame Engines
description: 'ClearFlame Engine Technologies was a Woodridge, Illinois clean-combustion engine startup
  founded in 2016 by BJ Johnson and Julie Blumreiter, developing a retrofit technology that let
  conventional heavy-duty diesel engines run on ethanol and other low-carbon liquid fuels for the
  hard-to-electrify segments of transportation — long-haul trucking, agriculture, construction and
  other non-road diesel applications. It raised roughly $50M across Series A and B rounds from
  venture and industrial investors including John Deere, and appeared on secondary markets such as
  Forge Global. The company is a hardware and powertrain engineering business with no developer
  program, no public API and no machine-readable specifications; by 2025 it had lost investor
  support, its co-founder CEO had departed, it was listed as not in good standing in Illinois, and
  it moved toward bankruptcy and asset liquidation. Its website no longer serves content.'
url: https://raw.githubusercontent.com/api-evangelist/clearflame-engines/refs/heads/main/apis.yml
x-type: company
x-source: harvest:secondary-market
x-tier: stub
x-tier-reason: harvest
specificationVersion: '0.23'
created: '2026-08-09'
modified: '2026-08-09'
tags:
- Company
- Engines
- Clean Energy
- Transportation
- Heavy Duty Trucking
- Decarbonization
- Ethanol
- Manufacturing
apis: []
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com
- FN: APIs.json
  email: info@apis.io
common:
- type: Website
  url: https://forgeglobal.com/clearflame-engines_stock/
x-enrichment:
  date: '2026-08-09'
  status: nochange
  artifacts_added: 0
  pass: local-v1
x-coverage:
  state: none
  reason: defunct
  detail: ClearFlame moved toward bankruptcy and asset liquidation in 2025 after losing investor
    support, and clearflameengines.com now answers every path with a Cloudflare 522 (origin
    unreachable) — the last Wayback capture of a working site is 2025-07-09, and there was never a
    developer program on it to begin with.
  evidence:
  - url: https://www.clearflameengines.com/
    status: 522
  - url: https://www.clearflameengines.com/.well-known/agent-card.json
    status: 0
  - url: https://api.clearflameengines.com/
    status: 0
  - url: https://pypi.org/simple/clearflame/
    status: 404
  checked: '2026-08-09'