Page 267 - The Central Motor Vehicles Rules, 1989

RULE 115AB THE CENTRAL MOTOR VEHICLES RULES, 1989 239

(e) Tests for particulate matter and emission of visible pollutants (smoke)
stipulated in the rule 115AA shall not be applicable for CNG or Bio-CNG
or LNG engine or vehicle;
(f) For OE replacement engine and after market replacement engine on
“in-use” vehicles, the responsibility of the Type Approval and COP shall
be that of the vehicle manufacturer and replacement engine manufacturer
or supplier respectively. Prevailing COP procedure will also be applicable;
(g) The type approval certificate of CNG or Bio-CNG or LNG for replacement
engine shall be valid for three years from the date of the issue of type
approval certificate and shall be renewable for 3 years at a time;
(h) For the purpose of granting type approval to the agriculture tractor, power
tiller, construction equipment vehicle/combine harvester fitted with
replacement CNG/Bio-CNG/LNG engine, following performance Tests
shall be carried out as per the table given below by the test agencies,
namely:—

Test Reference Document (as amended from time to time)
(1) (2)
(i) Mass emission test MoRTH/CMVR/TAP-115/116 and notifications issued
by the Government of India in this respect
(ii) Engine performance test Part IV MoRTH/CMVR/TAP-115/116 issue no. 3 and
(gross power without fan) notifications issued by the Government of India in this
respect. (Performance of the replacement
CNG/Bio-CNG/LNG engine shall match with the
performance of the original diesel engine ( Power, torque
and speed range)
Explanation:
(a) The mass emission test shall be carried out on engine dynamometer, as
applicable.
(b) Vehicles offered for type approval to the testing agency referred in rule 126
shall have to comply with fitness requirement, as applicable under these
rules.
(c) Test procedure and safety guidelines for such CNG/Bio-CNG/LNG
vehicles, kit component including installation thereof shall be as per AIS
024, AIS 028 (rev.1) as amended from time to time, till such time as
corresponding BIS specification are notified.
(d) The test agency shall complete the test and give necessary certificate within
three months of the same being submitted for test.
(e) Testing agencies will be required to indicate specifically, the models and
their variants on which the replacement of new engine will be valid.]