How to evaluate sources on the Wankel engine
How to assess sources on the Wankel engine, record what they support, and leave pending any claims that lack specific documentation.
Key points
This guide proposes a method for evaluating sources on the Wankel engine and recording what each supports. The evidence gathered here does not verify specific models or technical data; such claims require primary or specific technical documentation.
Define the claim you want to verify
Turn the doubt into a specific claim and define in advance what the source must identify: the technical issue, the model or configuration and, where relevant, the period and market. Do not extend a general description to a specific case.
Separate compound claims. If a sentence includes a model, a version and the function of a system, convert it into claims that can be verified separately.
- Operation and kinematics: identify the exact aspect you want to describe and look for technical documentation that covers it.
- Models and versions: note each vehicle, version and period separately to check that the source covers that case.
- Function of a configuration: look for documentation that allows distinguishing whether the system refers to propulsion or electrical generation; do not infer the function solely from the engine name.
- Consumption and emissions: define which data and conditions you want to compare; do not present a comparison as a fact without comparable technical data.
Cross-check each claim with appropriate documentation
Start with primary or technical documentation relevant to the specific claim. To locate vehicle data, you can search for official manufacturer documents, such as service manuals, technical sheets or system documentation; try the exact model and version name along with terms like 'workshop manual', 'service manual' or 'technical documentation'.
Check who publishes the document, what case it covers and whether you can locate the passage supporting the claim. Record separately if it offers direct support, only context or no relevant data. A general explanation of the engine can guide the search, but it does not by itself confirm a model, a version or the function of a system.
- Verify that the document identifies the specific case and locate the relevant page, figure or table before using it as support.
- If the document does not cover the model, version or function you want to check, look for a source with that scope; in the meantime, do not present the claim as confirmed.
Keep a record that allows repeating the check
Use a sheet per claim so that another person can locate the same evidence and evaluate the conclusion. Note the consultation date and keep a brief quote or a precise description of the passage.
| Claim | Scope that must be covered | Source and locator | Result |
|---|---|---|---|
| A specific model uses a Wankel engine as a generator. | Specific vehicle, version, period and market. | Reference consulted; the evidence gathered here does not provide a locator that identifies that case. | Pending: cannot be confirmed with the located evidence. |
- Formulate a single verifiable claim per row and indicate the model or configuration and the period or market if applicable.
- Record the source, the exact locator —page, figure or table— and which part of the passage supports the claim.
- Assign a clear result: direct support, insufficient context or pending; briefly explain the reason.
Carefully interpret what the sources allow
Classify the result according to what the passage accredits: direct support, insufficient context or pending claim. A general description does not by itself prove a specific application or configuration.
If two sources seem to disagree, check if they agree on subject, model, configuration, period and market. If the discrepancy persists within the same scope, note it and look for specific documentation before resolving it.
When writing, separate what is supported from what the source does not allow determining. For example: 'This source describes [documented aspect], but does not identify [model or configuration]; that claim remains pending verification'.
The lack of support in a specific source does not by itself resolve the claim: record which document you consulted and what information is missing to verify it.
Example: checking if a model uses the Wankel as a generator
Formulate the claim with the data you want to check: '[model and version] uses a Wankel engine as a generator'. Add the period and market to narrow the search.
Look for technical documentation that identifies that vehicle. When you find a relevant document, locate the passage, schematic or table that describes the function of the system and note the page or figure along with the claim. Check that the document corresponds to the same version and period.
The evidence gathered for this guide does not allow identifying a specific model or confirming whether one uses the engine to drive the wheels or as a generator. Therefore, the example remains as a verification sheet: without a document and a locator that support the case, the claim remains pending.
What is advisable to note when reviewing a source?
Record who publishes the document, its title and version, the consultation date and the relevant page, figure or table. Indicate which part of the claim it supports; if it does not identify the specific case or does not offer sufficient support, leave the claim pending.
